Merge pull request #1322 from Mbucari/master

Improve Libation's interaction with the file system & other minor fixes

Source/AaxDecrypter/AaxcDownloadConvertBase.cs

@@ -126,8 +126,8 @@ namespace AaxDecrypter
 				if (DownloadOptions.SeriesName is string series)
 					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "SERIES", series);
 
-				if (DownloadOptions.SeriesNumber is float part)
+				if (DownloadOptions.SeriesNumber is string part)
-					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "PART", part.ToString());
+					AaxFile.AppleTags.AppleListBox.EditOrAddFreeformTag(tagDomain, "PART", part);
 			}
 
 			OnRetrievedTitle(AaxFile.AppleTags.TitleSansUnabridged);

Source/AaxDecrypter/IDownloadOptions.cs

@@ -43,7 +43,7 @@ namespace AaxDecrypter
 		string? Publisher { get; }
 		string? Language { get; }
 		string? SeriesName { get; }
-		float? SeriesNumber { get; }
+		string? SeriesNumber { get; }
 		NAudio.Lame.LameConfig? LameConfig { get; }
         bool Downsample { get; }
         bool MatchSourceBitrate { get; }

Source/AppScaffolding/LibationScaffolding.cs

@@ -121,7 +121,7 @@ namespace AppScaffolding
 					zipFileSink["Name"] = "File";
 					fileChanged = true;
 				}
-				var hooks = $"{nameof(LibationFileManager)}.{nameof(FileSinkHook)}, {nameof(LibationFileManager)}";
+				var hooks = typeof(FileSinkHook).AssemblyQualifiedName;
 				if (serilog.SelectToken("$.WriteTo[?(@.Name == 'File')].Args", false) is JObject fileSinkArgs
 					&& fileSinkArgs["hooks"]?.Value<string>() != hooks)
 				{
@@ -158,7 +158,8 @@ namespace AppScaffolding
 									// - with class and method info: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] (at {Caller}) {Message:lj}{NewLine}{Exception}";
 									//   output example:             2019-11-26 08:48:40.224 -05:00 [DBG] (at LibationWinForms.Program.init()) Begin Libation
 									// {Properties:j} needed for expanded exception logging
-									{ "outputTemplate", "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] (at {Caller}) {Message:lj}{NewLine}{Exception} {Properties:j}" }
+									{ "outputTemplate", "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{Level:u3}] (at {Caller}) {Message:lj}{NewLine}{Exception} {Properties:j}" },
+									{ "hooks", typeof(FileSinkHook).AssemblyQualifiedName }, // for FileSinkHook
 								}
 							}
 						}

Source/DataLayer/QueryObjects/LibraryBookQueries.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using Microsoft.EntityFrameworkCore;
 
+#nullable enable
 namespace DataLayer
 {
     // only library importing should use tracking. All else should be NoTracking.
@@ -24,13 +25,13 @@ namespace DataLayer
 				.Where(c => !c.Book.IsEpisodeParent() || includeParents)
 				.ToList();
 
-        public static LibraryBook GetLibraryBook_Flat_NoTracking(this LibationContext context, string productId)
+        public static LibraryBook? GetLibraryBook_Flat_NoTracking(this LibationContext context, string productId)
             => context
                 .LibraryBooks
                 .AsNoTrackingWithIdentityResolution()
                 .GetLibraryBook(productId);
 
-        public static LibraryBook GetLibraryBook(this IQueryable<LibraryBook> library, string productId)
+        public static LibraryBook? GetLibraryBook(this IQueryable<LibraryBook> library, string productId)
             => library
                 .GetLibrary()
                 .SingleOrDefault(lb => lb.Book.AudibleProductId == productId);

Source/FileLiberator/DownloadOptions.cs

@@ -26,7 +26,7 @@ namespace FileLiberator
 		public string Language => LibraryBook.Book.Language;
 		public string? AudibleProductId => LibraryBookDto.AudibleProductId;
 		public string? SeriesName => LibraryBookDto.FirstSeries?.Name;
-		public float? SeriesNumber => LibraryBookDto.FirstSeries?.Number;
+		public string? SeriesNumber => LibraryBookDto.FirstSeries?.Number;
 		public NAudio.Lame.LameConfig? LameConfig { get; }
 		public string UserAgent => AudibleApi.Resources.Download_User_Agent;
 		public bool StripUnabridged => Config.AllowLibationFixup && Config.StripUnabridged;

Source/FileLiberator/UtilityExtensions.cs

@@ -83,7 +83,7 @@ namespace FileLiberator
 				.Select(sb
 					=> new SeriesDto(
 						sb.Series.Name,
-						sb.Book.IsEpisodeParent() ? null : sb.Index,
+						sb.Book.IsEpisodeParent() ? null : sb.Order,
 						sb.Series.AudibleSeriesId)
 				).ToList();
 		}

Source/FileManager/FileSystemTest.cs

@@ -0,0 +1,74 @@
+using System;
+using System.IO;
+
+namespace FileManager
+{
+	public static class FileSystemTest
+	{
+		/// <summary>
+		/// Additional characters which are illegal for filenames in Windows environments.
+		/// Double quotes and slashes are already illegal filename characters on all platforms,
+		/// so they are not included here.
+		/// </summary>
+		public static string AdditionalInvalidWindowsFilenameCharacters { get; } = "<>|:*?";
+
+		/// <summary>
+		/// Test if the directory supports filenames with characters that are invalid on Windows (:, *, ?, &lt;, &gt;, |).
+		/// </summary>
+		public static bool CanWriteWindowsInvalidChars(LongPath directoryName)
+		{
+			var testFile = Path.Combine(directoryName, AdditionalInvalidWindowsFilenameCharacters + Guid.NewGuid().ToString());
+			return CanWriteFile(testFile);
+		}
+
+		/// <summary>
+		/// Test if the directory supports filenames with 255 unicode characters.
+		/// </summary>
+		public static bool CanWrite255UnicodeChars(LongPath directoryName)
+		{
+			const char unicodeChar = 'ü';
+			var testFileName = new string(unicodeChar, 255);
+			var testFile = Path.Combine(directoryName, testFileName);
+			return CanWriteFile(testFile);
+		}
+
+		/// <summary>
+		/// Test if a directory has write access by attempting to create an empty file in it.
+		/// <para/>Returns true even if the temporary file can not be deleted.
+		/// </summary>
+		public static bool CanWriteDirectory(LongPath directoryName)
+		{
+			if (!Directory.Exists(directoryName))
+				return false;
+
+			Serilog.Log.Logger.Debug("Testing write permissions for directory: {@DirectoryName}", directoryName);
+			var testFilePath = Path.Combine(directoryName, Guid.NewGuid().ToString());
+			return CanWriteFile(testFilePath);
+		}
+
+		private static bool CanWriteFile(LongPath filename)
+		{
+			try
+			{
+				Serilog.Log.Logger.Debug("Testing ability to write filename: {@filename}", filename);
+				File.WriteAllBytes(filename, []);
+				Serilog.Log.Logger.Debug("Deleting test file after successful write: {@filename}", filename);
+				try
+				{
+					FileUtility.SaferDelete(filename);
+				}
+				catch (Exception ex)
+				{
+					//An error deleting the file doesn't constitute a write failure.
+					Serilog.Log.Logger.Debug(ex, "Error deleting test file: {@filename}", filename);
+				}
+				return true;
+			}
+			catch (Exception ex)
+			{
+				Serilog.Log.Logger.Debug(ex, "Error writing test file: {@filename}", filename);
+				return false;
+			}
+		}
+	}
+}

Source/FileManager/LogArchiver.cs

@@ -56,7 +56,7 @@ namespace FileManager
 		{
 			ArgumentValidator.EnsureNotNull(name, nameof(name));
 
-			name = ReplacementCharacters.Barebones.ReplaceFilenameChars(name);
+			name = ReplacementCharacters.Barebones(true).ReplaceFilenameChars(name);
 			return Task.Run(() => AddFileInternal(name, contents.Span, comment));			
 		}
 

Source/FileManager/ReplacementCharacters.cs

@@ -74,12 +74,14 @@ namespace FileManager
 		}
 		public override int GetHashCode() => Replacements.GetHashCode();
 
-		public static readonly ReplacementCharacters Default
+		public static ReplacementCharacters Default(bool ntfs) => ntfs ? HiFi_NTFS : HiFi_Other;
-			= IsWindows
+		public static ReplacementCharacters LoFiDefault(bool ntfs) => ntfs ? LoFi_NTFS : LoFi_Other;
-			? new()
+		public static ReplacementCharacters Barebones(bool ntfs) => ntfs ? BareBones_NTFS : BareBones_Other;
-			{
+
-				Replacements = new Replacement[]
+		#region Defaults
-				{
+		private static readonly ReplacementCharacters HiFi_NTFS = new()
+		{
+			Replacements = [
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("∕"),
 					Replacement.FilenameBackSlash(""),
@@ -91,28 +93,23 @@ namespace FileManager
 					Replacement.Colon("_"),
 					Replacement.Asterisk("✱"),
 					Replacement.QuestionMark("？"),
-					Replacement.Pipe("⏐"),
+					Replacement.Pipe("⏐")]
-				}
+		};
-			}
+
-			: new()
+		private static readonly ReplacementCharacters HiFi_Other = new()
-			{
+		{
-				Replacements = new Replacement[]
+			Replacements = [
-				{
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("∕"),
 					Replacement.FilenameBackSlash("\\"),
 					Replacement.OpenQuote("“"),
 					Replacement.CloseQuote("”"),
-					Replacement.OtherQuote("\"")
+					Replacement.OtherQuote("\"")]
-				}
+		};
-			};
 
-		public static readonly ReplacementCharacters LoFiDefault
+		private static readonly ReplacementCharacters LoFi_NTFS = new()
-			= IsWindows
+		{
-			? new()
+			Replacements = [
-			{
-				Replacements = new Replacement[]
-				{
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("_"),
@@ -121,56 +118,54 @@ namespace FileManager
 					Replacement.OtherQuote("'"),
 					Replacement.OpenAngleBracket("{"),
 					Replacement.CloseAngleBracket("}"),
-					Replacement.Colon("-"),
+					Replacement.Colon("-")]
-				}
+		};
-			}
+
-			: new ()
+		private static readonly ReplacementCharacters LoFi_Other = new()
-			{
+		{
-				Replacements = new Replacement[]
+			Replacements = [
-				{
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("\\"),
 					Replacement.OpenQuote("\""),
 					Replacement.CloseQuote("\""),
-					Replacement.OtherQuote("\"")
+					Replacement.OtherQuote("\"")]
-				}
+		};
-			};
 
-		public static readonly ReplacementCharacters Barebones
+		private static readonly ReplacementCharacters BareBones_NTFS = new()
-			= IsWindows
+		{
-			? new ()
+			Replacements = [
-			{
-				Replacements = new Replacement[]
-				{
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("_"),
 					Replacement.OpenQuote("_"),
 					Replacement.CloseQuote("_"),
-					Replacement.OtherQuote("_")
+					Replacement.OtherQuote("_")]
-				}
+		};
-			}
+
-			: new ()
+		private static readonly ReplacementCharacters BareBones_Other = new()
-			{
+		{
-				Replacements = new Replacement[]
+			Replacements = [
-				{
 					Replacement.OtherInvalid("_"),
 					Replacement.FilenameForwardSlash("_"),
 					Replacement.FilenameBackSlash("\\"),
 					Replacement.OpenQuote("\""),
 					Replacement.CloseQuote("\""),
-					Replacement.OtherQuote("\"")
+					Replacement.OtherQuote("\"")]
-				}
+		};
-			};
+		#endregion
+		/// <summary>
+		/// Characters to consider invalid in filenames in addition to those returned by <see cref="Path.GetInvalidFileNameChars()"/>
+		/// </summary>
+		public static char[] AdditionalInvalidFilenameCharacters { get; set; } = [];
 
-		private static bool IsWindows => Environment.OSVersion.Platform is PlatformID.Win32NT;
+		internal static bool IsWindows => Environment.OSVersion.Platform is PlatformID.Win32NT;
 
-		private static readonly char[] invalidPathChars = Path.GetInvalidFileNameChars().Except(new[] {
+		private static char[] invalidPathChars { get; } = Path.GetInvalidFileNameChars().Except(new[] {
 				Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar
 			}).ToArray();
 
-		private static readonly char[] invalidSlashes = Path.GetInvalidFileNameChars().Intersect(new[] {
+		private static char[] invalidSlashes { get; } = Path.GetInvalidFileNameChars().Intersect(new[] {
 				Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar
 			}).ToArray();
 
@@ -229,8 +224,11 @@ namespace FileManager
 			return DefaultReplacement;
 		}
 
+		private static bool CharIsPathInvalid(char c)
+			=> invalidPathChars.Contains(c) || AdditionalInvalidFilenameCharacters.Contains(c);
+
 		public static bool ContainsInvalidPathChar(string path)
-			=> path.Any(c => invalidPathChars.Contains(c));
+			=> path.Any(CharIsPathInvalid);
 		public static bool ContainsInvalidFilenameChar(string path)
 			=> ContainsInvalidPathChar(path) || path.Any(c => invalidSlashes.Contains(c));
 
@@ -242,7 +240,7 @@ namespace FileManager
 			{
 				var c = fileName[i];
 
-				if (invalidPathChars.Contains(c)
+				if (CharIsPathInvalid(c)
 					|| invalidSlashes.Contains(c)
 					|| Replacements.Any(r => r.CharacterToReplace == c) /* Replace any other legal characters that they user wants. */ )
 				{
@@ -267,14 +265,14 @@ namespace FileManager
 
 				if (
 					(
-						invalidPathChars.Contains(c)
+						CharIsPathInvalid(c)
-						|| (	// Replace any other legal characters that they user wants.
+						|| (    // Replace any other legal characters that they user wants.
 								c != Path.DirectorySeparatorChar
 								&& c != Path.AltDirectorySeparatorChar
 								&& Replacements.Any(r => r.CharacterToReplace == c)
 							)
 					)
-					&& !(	// replace all colons except drive letter designator on Windows
+					&& !(   // replace all colons except drive letter designator on Windows
 							c == ':'
 							&& i == 1
 							&& Path.IsPathRooted(pathStr)
@@ -282,9 +280,9 @@ namespace FileManager
 					)
 				)
 				{
-						char preceding = i > 0 ? pathStr[i - 1] : default;
+					char preceding = i > 0 ? pathStr[i - 1] : default;
-						char succeeding = i < pathStr.Length - 1 ? pathStr[i + 1] : default;
+					char succeeding = i < pathStr.Length - 1 ? pathStr[i + 1] : default;
-						builder.Append(GetPathCharReplacement(c, preceding, succeeding));
+					builder.Append(GetPathCharReplacement(c, preceding, succeeding));
 				}
 				else
 					builder.Append(c);
@@ -301,23 +299,21 @@ namespace FileManager
 
 		public override object ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
 		{
+			var defaults = ReplacementCharacters.Default(ReplacementCharacters.IsWindows).Replacements;
+
 			var jObj = JObject.Load(reader);
 			var replaceArr = jObj[nameof(Replacement)];
-			var dict
+			var dict = replaceArr?.ToObject<Replacement[]>()?.ToList() ?? defaults;
-				= replaceArr?.ToObject<Replacement[]>()?.ToList()
-				?? ReplacementCharacters.Default.Replacements;
-
 
 			//Ensure that the first 6 replacements are for the expected chars and that all replacement strings are valid.
 			//If not, reset to default.
-
 			for (int i = 0; i < Replacement.FIXED_COUNT; i++)
 			{
 				if (dict.Count < Replacement.FIXED_COUNT
-					|| dict[i].CharacterToReplace != ReplacementCharacters.Barebones.Replacements[i].CharacterToReplace
+					|| dict[i].CharacterToReplace != defaults[i].CharacterToReplace
-					|| dict[i].Description != ReplacementCharacters.Barebones.Replacements[i].Description)
+					|| dict[i].Description != defaults[i].Description)
 				{
-					dict = ReplacementCharacters.Default.Replacements;
+					dict = defaults;
 					break;
 				}
 

Source/LibationAvalonia/App.axaml.cs

@@ -120,7 +120,10 @@ namespace LibationAvalonia
 						ShowMainWindow(desktop);
 					}
 					else
-						await CancelInstallation();
+					{
+						e.Cancel = true;
+						await CancelInstallation(setupDialog);
+					}
 				}
 				else if (setupDialog.IsReturningUser)
 				{
@@ -128,7 +131,8 @@ namespace LibationAvalonia
 				}
 				else
 				{
-					await CancelInstallation();
+					e.Cancel = true;
+					await CancelInstallation(setupDialog);
 					return;
 				}
 
@@ -139,11 +143,11 @@ namespace LibationAvalonia
 				var body = "An unrecoverable error occurred. Since this error happened before logging could be initialized, this error can not be written to the log file.";
 				try
 				{
-					await MessageBox.ShowAdminAlert(null, body, title, ex);
+					await MessageBox.ShowAdminAlert(setupDialog, body, title, ex);
 				}
 				catch
 				{
-					await MessageBox.Show($"{body}\r\n\r\n{ex.Message}\r\n\r\n{ex.StackTrace}", title, MessageBoxButtons.OK, MessageBoxIcon.Error);
+					await MessageBox.Show(setupDialog, $"{body}\r\n\r\n{ex.Message}\r\n\r\n{ex.StackTrace}", title, MessageBoxButtons.OK, MessageBoxIcon.Error);
 				}
 				return;
 			}
@@ -190,6 +194,7 @@ namespace LibationAvalonia
 			{
 				// path did not result in valid settings
 				var continueResult = await MessageBox.Show(
+					libationFilesDialog,
 					$"No valid settings were found at this location.\r\nWould you like to create a new install settings in this folder?\r\n\r\n{libationFilesDialog.SelectedDirectory}",
 					"New install?",
 					MessageBoxButtons.YesNo,
@@ -207,18 +212,18 @@ namespace LibationAvalonia
 						ShowMainWindow(desktop);
 					}
 					else
-						await CancelInstallation();
+						await CancelInstallation(libationFilesDialog);
 				}
 				else
-					await CancelInstallation();
+					await CancelInstallation(libationFilesDialog);
 			}
 
 			libationFilesDialog.Close();
 		}
 
-		static async Task CancelInstallation()
+		static async Task CancelInstallation(Window window)
 		{
-			await MessageBox.Show("Initial set up cancelled.", "Cancelled", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+			await MessageBox.Show(window, "Initial set up cancelled.", "Cancelled", MessageBoxButtons.OK, MessageBoxIcon.Warning);
 			Environment.Exit(0);
 		}
 

Source/LibationAvalonia/Controls/LinkLabel.axaml.cs

@@ -92,13 +92,11 @@ namespace LibationAvalonia.Controls
 			base.UpdateDataValidation(property, state, error);
 			if (property == CommandProperty)
 			{
-				if (state == BindingValueType.BindingError)
+				var canExecure = !state.HasFlag(BindingValueType.HasError);
+				if (canExecure != _commandCanExecute)
 				{
-					if (_commandCanExecute)
+					_commandCanExecute = canExecure;
-					{
+					UpdateIsEffectivelyEnabled();
-						_commandCanExecute = false;
-						UpdateIsEffectivelyEnabled();
-					}
 				}
 			}
 		}

Source/LibationAvalonia/Dialogs/EditReplacementChars.axaml

@@ -6,6 +6,8 @@
 		MinWidth="500" MinHeight="450"
 		Width="500" Height="450"
         x:Class="LibationAvalonia.Dialogs.EditReplacementChars"
+		xmlns:dialogs="clr-namespace:LibationAvalonia.Dialogs"
+		x:DataType="dialogs:EditReplacementChars"
         Title="Illegal Character Replacement">
 
 	<Grid
@@ -23,31 +25,30 @@
 			BeginningEdit="ReplacementGrid_BeginningEdit"
 			CellEditEnding="ReplacementGrid_CellEditEnding"
 			KeyDown="ReplacementGrid_KeyDown"
-			ItemsSource="{Binding replacements}">
+			ItemsSource="{CompiledBinding replacements}">
 
 			<DataGrid.Columns>
 
-
 				<DataGridTemplateColumn Header="Char to&#xa;Replace">
 					<DataGridTemplateColumn.CellTemplate>
-						<DataTemplate>
+						<DataTemplate x:DataType="dialogs:EditReplacementChars+ReplacementsExt">
-							<TextBox IsReadOnly="{Binding Mandatory}" Text="{Binding CharacterToReplace, Mode=TwoWay}" />
+							<TextBox IsReadOnly="{CompiledBinding Mandatory}" Text="{CompiledBinding CharacterToReplace, Mode=TwoWay}" />
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
 				
 				<DataGridTemplateColumn Header="Replacement&#xa;Text">
 					<DataGridTemplateColumn.CellTemplate>
-						<DataTemplate>
+						<DataTemplate x:DataType="dialogs:EditReplacementChars+ReplacementsExt">
-							<TextBox Text="{Binding ReplacementText, Mode=TwoWay}" />
+							<TextBox Text="{CompiledBinding ReplacementText, Mode=TwoWay}" />
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
 
 				<DataGridTemplateColumn Width="*" Header="Description">
 					<DataGridTemplateColumn.CellTemplate>
-						<DataTemplate>
+						<DataTemplate x:DataType="dialogs:EditReplacementChars+ReplacementsExt">
-							<TextBox IsReadOnly="{Binding Mandatory}" Text="{Binding Description, Mode=TwoWay}" />
+							<TextBox IsReadOnly="{CompiledBinding Mandatory}" Text="{CompiledBinding Description, Mode=TwoWay}" />
 						</DataTemplate>
 					</DataGridTemplateColumn.CellTemplate>
 				</DataGridTemplateColumn>
@@ -55,21 +56,31 @@
 			</DataGrid.Columns>
 		</DataGrid>
 
-		<StackPanel
+		<Grid
 			Grid.Row="1"
 			Grid.Column="0"
+			RowDefinitions="Auto,Auto"
 			Margin="5"
-			Orientation="Horizontal">
+			ColumnDefinitions="Auto,Auto,Auto,Auto">
 
-			<Button Margin="0,0,10,0" Command="{Binding Defaults}" Content="Defaults" />
+			<TextBlock IsVisible="{CompiledBinding !EnvironmentIsWindows}" Text="This System:" Margin="0,0,10,0" VerticalAlignment="Center" />
-			<Button Margin="0,0,10,0" Command="{Binding LoFiDefaults}" Content="LoFi Defaults" />
+			<TextBlock IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Text="NTFS:" Margin="0,0,10,0" VerticalAlignment="Center" />
-			<Button Command="{Binding Barebones}" Content="Barebones" />
+
-		</StackPanel>
+			<Button Grid.Column="1" Margin="0,0,10,0" Command="{CompiledBinding Defaults}" CommandParameter="{CompiledBinding EnvironmentIsWindows}" Content="Defaults" />
+			<Button Grid.Column="2" Margin="0,0,10,0" Command="{CompiledBinding LoFiDefaults}" CommandParameter="{CompiledBinding EnvironmentIsWindows}" Content="LoFi Defaults" />
+			<Button Grid.Column="3" Command="{CompiledBinding Barebones}" CommandParameter="{CompiledBinding EnvironmentIsWindows}" Content="Barebones" />
+
+			<Button IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Grid.Column="1" Margin="0,10,10,0" Command="{CompiledBinding Defaults}" CommandParameter="True" Content="Defaults" />
+			<Button IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Grid.Column="2" Margin="0,10,10,0" Command="{CompiledBinding LoFiDefaults}" CommandParameter="True" Content="LoFi Defaults" />
+			<Button IsVisible="{CompiledBinding !EnvironmentIsWindows}" Grid.Row="1" Grid.Column="3" Margin="0,10,0,0" Command="{CompiledBinding Barebones}" CommandParameter="True" Content="Barebones" />
+
+		</Grid>
 
 		<StackPanel
 			Grid.Row="1"
 			Grid.Column="1"
 			Margin="5"
+			VerticalAlignment="Bottom"
 			Orientation="Horizontal">
 
 			<Button Margin="0,0,10,0" Command="{Binding Close}" Content="Cancel" />

Source/LibationAvalonia/Dialogs/EditReplacementChars.axaml.cs

@@ -13,6 +13,8 @@ namespace LibationAvalonia.Dialogs
 	{
 		Configuration config;
 
+		public bool EnvironmentIsWindows => Configuration.IsWindows;
+
 		private readonly List<ReplacementsExt> SOURCE = new();
 		public DataGridCollectionView replacements { get; }
 		public EditReplacementChars()
@@ -23,7 +25,7 @@ namespace LibationAvalonia.Dialogs
 
 			if (Design.IsDesignMode)
 			{
-				LoadTable(ReplacementCharacters.Default.Replacements);
+				LoadTable(ReplacementCharacters.Default(true).Replacements);
 			}
 
 			DataContext = this;
@@ -35,12 +37,12 @@ namespace LibationAvalonia.Dialogs
 			LoadTable(config.ReplacementCharacters.Replacements);
 		}
 
-		public void Defaults()
+		public void Defaults(bool isNtfs)
-			=> LoadTable(ReplacementCharacters.Default.Replacements);
+			=> LoadTable(ReplacementCharacters.Default(isNtfs).Replacements);
-		public void LoFiDefaults()
+		public void LoFiDefaults(bool isNtfs)
-			=> LoadTable(ReplacementCharacters.LoFiDefault.Replacements);
+			=> LoadTable(ReplacementCharacters.LoFiDefault(isNtfs).Replacements);
-		public void Barebones()
+		public void Barebones(bool isNtfs)
-			=> LoadTable(ReplacementCharacters.Barebones.Replacements);
+			=> LoadTable(ReplacementCharacters.Barebones(isNtfs).Replacements);
 
 		protected override void SaveAndClose()
 		{

Source/LibationAvalonia/Dialogs/EditTemplateDialog.axaml

@@ -6,24 +6,28 @@
 		Width="800" Height="450"
         x:Class="LibationAvalonia.Dialogs.EditTemplateDialog"
 		xmlns:dialogs="clr-namespace:LibationAvalonia.Dialogs"
+		xmlns:controls="clr-namespace:LibationAvalonia.Controls"
+		x:DataType="dialogs:EditTemplateDialog+EditTemplateViewModel"
         Title="EditTemplateDialog">
 
-	<Grid RowDefinitions="Auto,*,Auto">
+	<Grid RowDefinitions="Auto,*,Auto" Margin="10">
 		<Grid
 			Grid.Row="0"
 			RowDefinitions="Auto,Auto"
-			ColumnDefinitions="*,Auto" Margin="5">
+			ColumnDefinitions="*,Auto"
+			Margin="0,0,0,10">
 
 			<TextBlock
 				Grid.Column="0"
 				Grid.Row="0"
-				Text="{Binding Description}" />
+				Margin="0,0,0,10"
+				Text="{CompiledBinding Description}" />
 
 			<TextBox
 				Grid.Column="0"
 				Grid.Row="1"
 				Name="userEditTbox"
-				Text="{Binding UserTemplateText, Mode=TwoWay}" />
+				Text="{CompiledBinding UserTemplateText, Mode=TwoWay}" />
 
 			<Button
 				Grid.Column="1"
@@ -32,9 +36,10 @@
 				VerticalAlignment="Stretch"
 				VerticalContentAlignment="Center"
 				Content="Reset to Default"
-				Command="{Binding ResetToDefault}"/>
+				Command="{CompiledBinding ResetToDefault}"/>
 		</Grid>
-		<Grid Grid.Row="1" ColumnDefinitions="Auto,*">
+		<Grid Grid.Row="1" ColumnDefinitions="Auto,*"
+			  Margin="0,0,0,10">
 
 				<DataGrid
 					Grid.Row="0"
@@ -44,13 +49,13 @@
 					GridLinesVisibility="All"
 					AutoGenerateColumns="False"
 					DoubleTapped="EditTemplateViewModel_DoubleTapped"
-					ItemsSource="{Binding ListItems}" >
+					ItemsSource="{CompiledBinding ListItems}" >
 
 					<DataGrid.Columns>
 						<DataGridTemplateColumn Width="Auto" Header="Tag">
 							<DataGridTemplateColumn.CellTemplate>
 								<DataTemplate>
-									<TextBlock Height="18" Margin="10,0,10,0" VerticalAlignment="Center" Text="{Binding Item1}" />
+									<TextBlock Height="18" Margin="10,0,10,0" VerticalAlignment="Center" Text="{CompiledBinding Item1}" />
 								</DataTemplate>
 							</DataGridTemplateColumn.CellTemplate>
 						</DataGridTemplateColumn>
@@ -61,7 +66,7 @@
 									<TextBlock
 										Height="18"
 										Margin="10,0,10,0"
-										VerticalAlignment="Center" Text="{Binding Item2}" />
+										VerticalAlignment="Center" Text="{CompiledBinding Item2}" />
 								</DataTemplate>
 							</DataGridTemplateColumn.CellTemplate>
 						</DataGridTemplateColumn>
@@ -71,23 +76,22 @@
 			
 			<Grid
 			Grid.Column="1"
-			Margin="5,0,5,0"
+			Margin="10,0,0,0"
 			RowDefinitions="Auto,*,Auto"
 			HorizontalAlignment="Stretch">
 
 				<TextBlock
-					Margin="5,5,5,10"
+					Margin="0,0,0,5"
 					Text="Example:"/>
 				
 				<Border
 					Grid.Row="1"
-					Margin="5"
 					BorderThickness="1"
 					BorderBrush="{DynamicResource DataGridGridLinesBrush}">
 					
 					<TextBlock
 						TextWrapping="WrapWithOverflow"
-						Inlines="{Binding Inlines}" />
+						Inlines="{CompiledBinding Inlines}" />
 
 				</Border>
 
@@ -95,13 +99,17 @@
 					Grid.Row="2"
 					Margin="5"
 					Foreground="Firebrick"
-					Text="{Binding WarningText}"
+					Text="{CompiledBinding WarningText}"
-					IsVisible="{Binding WarningText, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
+					IsVisible="{CompiledBinding WarningText, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
 			</Grid>
 		</Grid>
+		<controls:LinkLabel
+			Grid.Row="2"
+			VerticalAlignment="Center"
+			Text="Read about naming templates on the Wiki"
+			Command="{Binding GoToNamingTemplateWiki}" />
 		<Button
 			Grid.Row="2"
-			Margin="5"
 			Padding="30,5,30,5"
 			HorizontalAlignment="Right"
 			Content="Save"

Source/LibationAvalonia/Dialogs/EditTemplateDialog.axaml.cs

@@ -70,7 +70,7 @@ public partial class EditTemplateDialog : DialogWindow
 	public async void SaveButton_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
 		=> await SaveAndCloseAsync();
 
-	private class EditTemplateViewModel : ViewModels.ViewModelBase
+	internal class EditTemplateViewModel : ViewModels.ViewModelBase
 	{
 		private readonly Configuration config;
 		public InlineCollection Inlines { get; } = new();
@@ -96,6 +96,9 @@ public partial class EditTemplateDialog : DialogWindow
 
 		}
 
+		public void GoToNamingTemplateWiki()
+			=> Go.To.Url(@"ht" + "tps://github.com/rmcrackan/Libation/blob/master/Documentation/NamingTemplates.md");
+
 		// hold the work-in-progress value. not guaranteed to be valid
 		private string _userTemplateText;
 		public string UserTemplateText

Source/LibationAvalonia/Dialogs/LocateAudiobooksDialog.axaml.cs

@@ -13,11 +13,12 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
+#nullable enable
 namespace LibationAvalonia.Dialogs
 {
 	public partial class LocateAudiobooksDialog : DialogWindow
 	{
-		private event EventHandler<FilePathCache.CacheEntry> FileFound;
+		private event EventHandler<FilePathCache.CacheEntry>? FileFound;
 		private readonly CancellationTokenSource tokenSource = new();
 		private readonly List<string> foundAsins = new();
 		private readonly LocatedAudiobooksViewModel _viewModel;
@@ -41,7 +42,7 @@ namespace LibationAvalonia.Dialogs
 			}
 		}
 
-		private void LocateAudiobooksDialog_Closing(object sender, System.ComponentModel.CancelEventArgs e)
+		private void LocateAudiobooksDialog_Closing(object? sender, System.ComponentModel.CancelEventArgs e)
 		{
 			tokenSource.Cancel();
 			//If this dialog is closed before it's completed, Closing is fired
@@ -50,7 +51,7 @@ namespace LibationAvalonia.Dialogs
 			this.SaveSizeAndLocation(Configuration.Instance);
 		}
 
-		private void LocateAudiobooks_FileFound(object sender, FilePathCache.CacheEntry e)
+		private void LocateAudiobooks_FileFound(object? sender, FilePathCache.CacheEntry e)
 		{
 			var newItem = new Tuple<string, string>($"[{e.Id}]", Path.GetFileName(e.Path));
 			_viewModel.FoundFiles.Add(newItem);
@@ -63,13 +64,13 @@ namespace LibationAvalonia.Dialogs
 			}
 		}
 
-		private async void LocateAudiobooksDialog_Opened(object sender, EventArgs e)
+		private async void LocateAudiobooksDialog_Opened(object? sender, EventArgs e)
 		{
 			var folderPicker = new FolderPickerOpenOptions
 			{
 				Title = "Select the folder to search for audiobooks",
 				AllowMultiple = false,
-				SuggestedStartLocation = await StorageProvider.TryGetFolderFromPathAsync(Configuration.Instance.Books.PathWithoutPrefix)
+				SuggestedStartLocation = await StorageProvider.TryGetFolderFromPathAsync(Configuration.Instance.Books?.PathWithoutPrefix ?? "")
 			};
 
 			var selectedFolder = (await StorageProvider.OpenFolderPickerAsync(folderPicker))?.SingleOrDefault()?.TryGetLocalPath();
@@ -89,11 +90,13 @@ namespace LibationAvalonia.Dialogs
 					FilePathCache.Insert(book);
 
 					var lb = context.GetLibraryBook_Flat_NoTracking(book.Id);
-					if (lb?.Book?.UserDefinedItem.BookStatus is not LiberatedStatus.Liberated)
+					if (lb is not null && lb.Book?.UserDefinedItem.BookStatus is not LiberatedStatus.Liberated)
 						await Task.Run(() => lb.UpdateBookStatus(LiberatedStatus.Liberated));
 
+					tokenSource.Token.ThrowIfCancellationRequested();
 					FileFound?.Invoke(this, book);
 				}
+				catch (OperationCanceledException) { }
 				catch (Exception ex)
 				{
 					Serilog.Log.Error(ex, "Error adding found audiobook file to Libation. {@audioFile}", book);

Source/LibationAvalonia/Dialogs/SettingsDialog.axaml.cs

@@ -1,7 +1,9 @@
 using Avalonia.Controls;
+using FileManager;
 using LibationAvalonia.ViewModels.Settings;
 using LibationFileManager;
 using LibationUiBase.Forms;
+using System;
 using System.Threading.Tasks;
 
 namespace LibationAvalonia.Dialogs
@@ -39,6 +41,21 @@ namespace LibationAvalonia.Dialogs
 		}
 
 		public async void SaveButton_Clicked(object sender, Avalonia.Interactivity.RoutedEventArgs e)
-			=> await SaveAndCloseAsync();
+		{
+			LongPath lonNewBooks = settingsDisp.ImportantSettings.GetBooksDirectory();
+			if (!System.IO.Directory.Exists(lonNewBooks))
+			{
+				try
+				{
+					System.IO.Directory.CreateDirectory(lonNewBooks);
+				}
+				catch (Exception ex)
+				{
+					await MessageBox.Show(this, $"Error creating Books Location:\n\n{ex.Message}", "Error creating directory", MessageBoxButtons.OK, MessageBoxIcon.Error);
+					return;
+				}
+			}
+			await SaveAndCloseAsync();
+		}
 	}
 }

Source/LibationAvalonia/ViewModels/MainVM.Import.cs

@@ -20,6 +20,7 @@ namespace LibationAvalonia.ViewModels
 		private bool _removeButtonsVisible = Design.IsDesignMode;
 		private int _numAccountsScanning = 2;
 		private int _accountsCount = 0;
+		public string LocateAudiobooksTip => Configuration.GetHelpText("LocateAudiobooks");
 
 		/// <summary> Auto scanning accounts is enables </summary>
 		public bool AutoScanChecked { get => _autoScanChecked; set => Configuration.Instance.AutoScan = this.RaiseAndSetIfChanged(ref _autoScanChecked, value); }
@@ -68,7 +69,8 @@ namespace LibationAvalonia.ViewModels
 			MainWindow.Loaded += (_, _) =>
 			{
 				refreshImportMenu();
-				AccountsSettingsPersister.Saved += refreshImportMenu;
+				AccountsSettingsPersister.Saved += (_, _)
+				=> Avalonia.Threading.Dispatcher.UIThread.Invoke(refreshImportMenu);
 			};
 
 			AutoScanChecked = Configuration.Instance.AutoScan;
@@ -172,8 +174,19 @@ namespace LibationAvalonia.ViewModels
 
 		public async Task LocateAudiobooksAsync()
 		{
-			var locateDialog = new LibationAvalonia.Dialogs.LocateAudiobooksDialog();
+			var result = await MessageBox.Show(
-			await locateDialog.ShowDialog(MainWindow);
+				MainWindow, 
+				Configuration.GetHelpText(nameof(LibationAvalonia.Dialogs.LocateAudiobooksDialog)),
+				"Locate Previously-Liberated Audiobook Files",
+				MessageBoxButtons.OKCancel,
+				MessageBoxIcon.Information,
+				MessageBoxDefaultButton.Button1);
+
+			if (result is DialogResult.OK)
+			{
+				var locateDialog = new LibationAvalonia.Dialogs.LocateAudiobooksDialog();
+				await locateDialog.ShowDialog(MainWindow);
+			}
 		}
 
 		private void setyNumScanningAccounts(int numScanning)
@@ -222,7 +235,7 @@ namespace LibationAvalonia.ViewModels
 			}
 		}
 
-		private void refreshImportMenu(object? _ = null, EventArgs? __ = null)
+		private void refreshImportMenu()
 		{
 			using var persister = AudibleApiStorage.GetAccountsSettingsPersister();
 			AccountsCount = persister.AccountsSettings.Accounts.Count;

Source/LibationAvalonia/ViewModels/Settings/ImportantSettingsVM.cs

@@ -36,10 +36,7 @@ namespace LibationAvalonia.ViewModels.Settings
 
 		public void SaveSettings(Configuration config)
 		{			
-			LongPath lonNewBooks = Configuration.GetKnownDirectory(BooksDirectory) is Configuration.KnownDirectories.None ? BooksDirectory : System.IO.Path.Combine(BooksDirectory, "Books");
+			config.Books = GetBooksDirectory();
-			if (!System.IO.Directory.Exists(lonNewBooks))
-				System.IO.Directory.CreateDirectory(lonNewBooks);
-			config.Books = lonNewBooks;
 			config.SavePodcastsToParentFolder = SavePodcastsToParentFolder;
 			config.OverwriteExisting = OverwriteExisting;
 			config.CreationTime = CreationTime.Value;
@@ -47,6 +44,9 @@ namespace LibationAvalonia.ViewModels.Settings
 			config.LogLevel = LoggingLevel;
 		}
 
+		public LongPath GetBooksDirectory()
+			=> Configuration.GetKnownDirectory(BooksDirectory) is Configuration.KnownDirectories.None ? BooksDirectory : System.IO.Path.Combine(BooksDirectory, "Books");
+
 		private static float scaleFactorToLinearRange(float scaleFactor)
 			=> float.Round(100 * MathF.Log2(scaleFactor));
 		private static float linearRangeToScaleFactor(float value)

Source/LibationAvalonia/Views/MainWindow.axaml

@@ -110,7 +110,7 @@
 					<MenuItem IsVisible="{CompiledBinding MultipleAccounts}" IsEnabled="{CompiledBinding RemoveMenuItemsEnabled}" Command="{CompiledBinding RemoveBooksSomeAsync}" Header="_Remove Books from Some Accounts" />
 						
 					<Separator />
-					<MenuItem Command="{CompiledBinding LocateAudiobooksAsync}" Header="L_ocate Audiobooks..." />
+					<MenuItem Command="{CompiledBinding LocateAudiobooksAsync}" Header="L_ocate Audiobooks..." ToolTip.Tip="{CompiledBinding LocateAudiobooksTip}" />
 
 				</MenuItem>
 					

Source/LibationAvalonia/Views/MainWindow.axaml.cs

@@ -43,6 +43,22 @@ namespace LibationAvalonia.Views
 				KeyBindings.Add(new KeyBinding { Command = ReactiveCommand.Create(ViewModel.ShowAccountsAsync), Gesture = new KeyGesture(Key.A, KeyModifiers.Control | KeyModifiers.Shift) });
 				KeyBindings.Add(new KeyBinding { Command = ReactiveCommand.Create(ViewModel.ExportLibraryAsync), Gesture = new KeyGesture(Key.S, KeyModifiers.Control) });
 			}
+
+			Configuration.Instance.PropertyChanged += Settings_PropertyChanged;
+			Settings_PropertyChanged(this, null);
+		}
+
+		[Dinah.Core.PropertyChangeFilter(nameof(Configuration.Books))]
+		private void Settings_PropertyChanged(object sender, Dinah.Core.PropertyChangedEventArgsEx e)
+		{
+			if (!Configuration.IsWindows)
+			{
+				//The books directory does not support filenames with windows' invalid characters.
+				//Tell the ReplacementCharacters configuration to treat those characters as invalid.
+				ReplacementCharacters.AdditionalInvalidFilenameCharacters
+					= Configuration.Instance.BooksCanWriteWindowsInvalidChars ? []
+					: FileSystemTest.AdditionalInvalidWindowsFilenameCharacters.ToArray();
+			}
 		}
 
 		private void AudibleApiStorage_LoadError(object sender, AccountSettingsLoadErrorEventArgs e)
@@ -54,7 +70,7 @@ namespace LibationAvalonia.Views
 					FileUtility.SaferMoveToValidPath(
 						e.SettingsFilePath,
 						e.SettingsFilePath,
-						ReplacementCharacters.Barebones,
+						Configuration.Instance.ReplacementCharacters,
 						"bak");
 				AudibleApiStorage.EnsureAccountsSettingsFileExists();
 				e.Handled = true;
@@ -103,6 +119,20 @@ namespace LibationAvalonia.Views
 
 		private async void MainWindow_Opened(object sender, EventArgs e)
 		{
+			if (AudibleFileStorage.BooksDirectory is null)
+			{
+				var result = await MessageBox.Show(
+					this,
+					"Please set a valid Books location in the settings dialog.",
+					"Books Directory Not Set",
+					MessageBoxButtons.OKCancel,
+					MessageBoxIcon.Warning,
+					MessageBoxDefaultButton.Button1);
+
+				if (result is DialogResult.OK)
+					await new SettingsDialog().ShowDialog(this);
+			}
+
 			if (Configuration.Instance.FirstLaunch)
 			{
 				var result = await MessageBox.Show(this, "Would you like a guided tour to get started?", "Libation Walkthrough", MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1);

Source/LibationAvalonia/Views/ProcessBookControl.axaml.cs

@@ -5,14 +5,15 @@ using DataLayer;
 using LibationUiBase;
 using LibationUiBase.ProcessQueue;
 
+#nullable enable
 namespace LibationAvalonia.Views
 {
-	public delegate void QueueItemPositionButtonClicked(ProcessBookViewModel item, QueuePosition queueButton);
+	public delegate void QueueItemPositionButtonClicked(ProcessBookViewModel? item, QueuePosition queueButton);
-	public delegate void QueueItemCancelButtonClicked(ProcessBookViewModel item);
+	public delegate void QueueItemCancelButtonClicked(ProcessBookViewModel? item);
 	public partial class ProcessBookControl : UserControl
 	{
-		public static event QueueItemPositionButtonClicked PositionButtonClicked;
+		public static event QueueItemPositionButtonClicked? PositionButtonClicked;
-		public static event QueueItemCancelButtonClicked CancelButtonClicked;
+		public static event QueueItemCancelButtonClicked? CancelButtonClicked;
 
 		public static readonly StyledProperty<ProcessBookStatus> ProcessBookStatusProperty =
 			AvaloniaProperty.Register<ProcessBookControl, ProcessBookStatus>(nameof(ProcessBookStatus), enableDataValidation: true);
@@ -31,12 +32,13 @@ namespace LibationAvalonia.Views
 			{
 				using var context = DbContexts.GetContext();
 				ViewModels.MainVM.Configure_NonUI();
-				DataContext = new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4IM1G"));
+				if (context.GetLibraryBook_Flat_NoTracking("B017V4IM1G") is LibraryBook book)
+					DataContext = new ProcessBookViewModel(book);
 				return;
 			}
 		}
 
-		private ProcessBookViewModel DataItem => DataContext is null ? null : DataContext as ProcessBookViewModel;
+		private ProcessBookViewModel? DataItem => DataContext as ProcessBookViewModel;
 
 		public void Cancel_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
 			=> CancelButtonClicked?.Invoke(DataItem);

Source/LibationAvalonia/Views/ProcessQueueControl.axaml.cs

@@ -34,44 +34,51 @@ namespace LibationAvalonia.Views
 				var vm = new ProcessQueueViewModel();
 				DataContext = vm;
 				using var context = DbContexts.GetContext();
+
+
+				var trialBook = context.GetLibraryBook_Flat_NoTracking("B017V4IM1G") ?? context.GetLibrary_Flat_NoTracking().FirstOrDefault();
+				if (trialBook is null)
+					return;
+
+
 				List<ProcessBookViewModel> testList = new()
 				{
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4IM1G"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.FailedAbort,
 						Status = ProcessBookStatus.Failed,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4IWVG"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.FailedSkip,
 						Status = ProcessBookStatus.Failed,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4JA2Q"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.FailedRetry,
 						Status = ProcessBookStatus.Failed,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4NUPO"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.ValidationFail,
 						Status = ProcessBookStatus.Failed,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4NMX4"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.Cancelled,
 						Status = ProcessBookStatus.Cancelled,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4NOZ0"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.Success,
 						Status = ProcessBookStatus.Completed,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017WJ5ZK6"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.None,
 						Status = ProcessBookStatus.Working,
 					},
-					new ProcessBookViewModel(context.GetLibraryBook_Flat_NoTracking("B017V4IM1G"))
+					new ProcessBookViewModel(trialBook)
 					{
 						Result = ProcessBookResult.None,
 						Status = ProcessBookStatus.Queued,
@@ -99,7 +106,7 @@ namespace LibationAvalonia.Views
 
 		#region Control event handlers
 
-		private async void ProcessBookControl2_CancelButtonClicked(ProcessBookViewModel item)
+		private async void ProcessBookControl2_CancelButtonClicked(ProcessBookViewModel? item)
 		{
 			if (item is not null)
 			{
@@ -108,19 +115,20 @@ namespace LibationAvalonia.Views
 			}
 		}
 
-		private void ProcessBookControl2_ButtonClicked(ProcessBookViewModel item, QueuePosition queueButton)
+		private void ProcessBookControl2_ButtonClicked(ProcessBookViewModel? item, QueuePosition queueButton)
 		{
-			Queue?.MoveQueuePosition(item, queueButton);
+			if (item is not null)
+				Queue?.MoveQueuePosition(item, queueButton);
 		}
 
-		public async void CancelAllBtn_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+		public async void CancelAllBtn_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
 		{
 			Queue?.ClearQueue();
 			if (Queue?.Current is not null)
 				await Queue.Current.CancelAsync();
 		}
 
-		public void ClearFinishedBtn_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+		public void ClearFinishedBtn_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
 		{
 			Queue?.ClearCompleted();
 
@@ -128,12 +136,12 @@ namespace LibationAvalonia.Views
 				_viewModel.RunningTime = string.Empty;
 		}
 
-		public void ClearLogBtn_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+		public void ClearLogBtn_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
 		{
 			_viewModel?.LogEntries.Clear();
 		}
 
-		private async void LogCopyBtn_Click(object sender, Avalonia.Interactivity.RoutedEventArgs e)
+		private async void LogCopyBtn_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
 		{
 			if (_viewModel is ProcessQueueViewModel vm)
 			{
@@ -143,14 +151,14 @@ namespace LibationAvalonia.Views
 			}
 		}
 
-		private async void cancelAllBtn_Click(object sender, EventArgs e)
+		private async void cancelAllBtn_Click(object? sender, EventArgs e)
 		{
 			Queue?.ClearQueue();
 			if (Queue?.Current is not null)
 				await Queue.Current.CancelAsync();
 		}
 
-		private void btnClearFinished_Click(object sender, EventArgs e)
+		private void btnClearFinished_Click(object? sender, EventArgs e)
 		{
 			Queue?.ClearCompleted();
 

Source/LibationAvalonia/Views/ProductsDisplay.axaml.cs

@@ -62,25 +62,22 @@ namespace LibationAvalonia.Views
 			if (Design.IsDesignMode)
 			{
 				using var context = DbContexts.GetContext();
-				List<LibraryBook> sampleEntries;
+				LibraryBook?[] sampleEntries;
 				try
 				{
-					sampleEntries = new()
+					sampleEntries = [
-					{
-						//context.GetLibraryBook_Flat_NoTracking("B00DCD0OXU"),try{
 						context.GetLibraryBook_Flat_NoTracking("B017WJ5ZK6"),
 						context.GetLibraryBook_Flat_NoTracking("B017V4IWVG"),
 						context.GetLibraryBook_Flat_NoTracking("B017V4JA2Q"),
 						context.GetLibraryBook_Flat_NoTracking("B017V4NUPO"),
 						context.GetLibraryBook_Flat_NoTracking("B017V4NMX4"),
 						context.GetLibraryBook_Flat_NoTracking("B017V4NOZ0"),
-						context.GetLibraryBook_Flat_NoTracking("B017WJ5ZK6")
+						context.GetLibraryBook_Flat_NoTracking("B017WJ5ZK6")];
-					};
 				}
-				catch { sampleEntries = new(); }
+				catch { sampleEntries = []; }
 
 				var pdvm = new ProductsDisplayViewModel();
-				_ = pdvm.BindToGridAsync(sampleEntries);
+				_ = pdvm.BindToGridAsync(sampleEntries.OfType<LibraryBook>().ToList());
 				DataContext = pdvm;
 
 				setGridScale(1);

Source/LibationAvalonia/Walkthrough.cs

@@ -5,6 +5,7 @@ using Avalonia.Controls.Presenters;
 using Avalonia.Controls.Primitives;
 using Avalonia.Media;
 using Avalonia.Styling;
+using Dinah.Core;
 using Dinah.Core.StepRunner;
 using LibationAvalonia.Dialogs;
 using LibationAvalonia.Views;
@@ -164,7 +165,8 @@ namespace LibationAvalonia
 			{
 				//if we imported new books, wait for the grid to update before proceeding.
 				if (newCount > 0)
-					MainForm.ViewModel.ProductsDisplay.VisibleCountChanged += productsDisplay_VisibleCountChanged;
+					Avalonia.Threading.Dispatcher.UIThread.Invoke(() =>
+						MainForm.ViewModel.ProductsDisplay.VisibleCountChanged += productsDisplay_VisibleCountChanged);
 				else
 					tcs.SetResult();
 			}
@@ -176,7 +178,7 @@ namespace LibationAvalonia
 			var books = DbContexts.GetLibrary_Flat_NoTracking();
 			if (books.Count == 0) return true;
 
-			var firstAuthor = getFirstAuthor();
+			var firstAuthor = getFirstAuthor()?.SurroundWithQuotes();
 			if (firstAuthor == null) return true;
 
 			if (!await ProceedMessageBox("You can filter the grid entries by searching", "Searching"))
@@ -193,7 +195,7 @@ namespace LibationAvalonia
 
 			await displayControlAsync(MainForm.filterBtn);
 
-			MainForm.filterBtn.Command.Execute(null);
+			MainForm.filterBtn.Command.Execute(firstAuthor);
 
 			await Task.Delay(1000);
 
@@ -209,8 +211,7 @@ namespace LibationAvalonia
 
 		private async Task<bool> ShowQuickFilters()
 		{
-			var firstAuthor = getFirstAuthor();
+			var firstAuthor = getFirstAuthor()?.SurroundWithQuotes();
-
 			if (firstAuthor == null) return true;
 
 			if (!await ProceedMessageBox("Queries that you perform regularly can be added to 'Quick Filters'", "Quick Filters"))
@@ -222,7 +223,7 @@ namespace LibationAvalonia
 
 			await Task.Delay(750);
 			await displayControlAsync(MainForm.addQuickFilterBtn);
-			MainForm.addQuickFilterBtn.Command.Execute(null);
+			MainForm.addQuickFilterBtn.Command.Execute(firstAuthor);
 			await displayControlAsync(MainForm.quickFiltersToolStripMenuItem);
 			await displayControlAsync(editQuickFiltersToolStripMenuItem);
 

Source/LibationCli/Options/ConvertOptions.cs

@@ -1,4 +1,6 @@
 using CommandLine;
+using LibationFileManager;
+using System;
 using System.Threading.Tasks;
 
 namespace LibationCli
@@ -6,6 +8,15 @@ namespace LibationCli
 	[Verb("convert", HelpText = "Convert mp4 to mp3.")]
 	public class ConvertOptions : ProcessableOptionsBase
 	{
-		protected override Task ProcessAsync() => RunAsync(CreateProcessable<FileLiberator.ConvertToMp3>());
+		protected override Task ProcessAsync()
+		{
+			if (AudibleFileStorage.BooksDirectory is null)
+			{
+				Console.Error.WriteLine("Error: Books directory is not set. Please configure the 'Books' setting in Settings.json.");
+				return Task.CompletedTask;
+			}
+
+			return RunAsync(CreateProcessable<FileLiberator.ConvertToMp3>());
+		}
 	}
 }

Source/LibationCli/Options/LiberateOptions.cs

@@ -1,6 +1,8 @@
 using CommandLine;
 using DataLayer;
 using FileLiberator;
+using LibationFileManager;
+using System;
 using System.Threading.Tasks;
 
 namespace LibationCli
@@ -13,9 +15,17 @@ namespace LibationCli
 		public bool PdfOnly { get; set; }
 
 		protected override Task ProcessAsync()
-			=> PdfOnly
+		{
+			if (AudibleFileStorage.BooksDirectory is null)
+			{
+				Console.Error.WriteLine("Error: Books directory is not set. Please configure the 'Books' setting in Settings.json.");
+				return Task.CompletedTask;
+			}
+
+			return PdfOnly
 			? RunAsync(CreateProcessable<DownloadPdf>())
 			: RunAsync(CreateBackupBook());
+		}
 
 		private static Processable CreateBackupBook()
 		{

Source/LibationFileManager/AudibleFileStorage.cs

@@ -45,13 +45,24 @@ namespace LibationFileManager
 
 		public static AudioFileStorage Audio { get; } = new AudioFileStorage();
 
-		public static LongPath BooksDirectory
+		/// <summary>
+		/// The fully-qualified Books durectory path if the directory exists, otherwise null.
+		/// </summary>
+		public static LongPath? BooksDirectory
 		{
 			get
 			{
 				if (string.IsNullOrWhiteSpace(Configuration.Instance.Books))
-					Configuration.Instance.Books = Configuration.DefaultBooksDirectory;
+					return null;
-				return Directory.CreateDirectory(Configuration.Instance.Books).FullName;
+				try
+				{
+					return Directory.CreateDirectory(Configuration.Instance.Books)?.FullName;
+				}
+				catch (Exception ex)
+				{
+					Serilog.Log.Error(ex, "Error creating Books directory: {@BooksDirectory}", Configuration.Instance.Books);
+					return null;
+				}
 			}
 		}
 		#endregion
@@ -129,8 +140,9 @@ namespace LibationFileManager
 		protected override LongPath? GetFilePathCustom(string productId)
 			=> GetFilePathsCustom(productId).FirstOrDefault();
 
-		private static BackgroundFileSystem newBookDirectoryFiles()
+		private static BackgroundFileSystem? newBookDirectoryFiles()
-			=> new BackgroundFileSystem(BooksDirectory, "*.*", SearchOption.AllDirectories);
+			=> BooksDirectory is LongPath books ? new BackgroundFileSystem(books, "*.*", SearchOption.AllDirectories)
+			: null;
 
 		protected override List<LongPath> GetFilePathsCustom(string productId)
 		{
@@ -140,6 +152,7 @@ namespace LibationFileManager
 					BookDirectoryFiles = newBookDirectoryFiles();
 
 			var regex = GetBookSearchRegex(productId);
+			var diskFiles = BookDirectoryFiles?.FindFiles(regex) ?? [];
 
 			//Find all extant files matching the productId
 			//using both the file system and the file path cache
@@ -148,17 +161,17 @@ namespace LibationFileManager
 				.GetFiles(productId)
 				.Where(c => c.fileType == FileType.Audio && File.Exists(c.path))
 				.Select(c => c.path)
-				.Union(BookDirectoryFiles.FindFiles(regex))
+				.Union(diskFiles)
 				.ToList();
 		}
 
 		public void Refresh()
 		{
-			if (BookDirectoryFiles is null)
+			if (BookDirectoryFiles is null && BooksDirectory is not null)
 				lock (bookDirectoryFilesLocker)
 					BookDirectoryFiles = newBookDirectoryFiles();
-			else
+
-				BookDirectoryFiles?.RefreshFiles();
+			BookDirectoryFiles?.RefreshFiles();
 		}
 
 		public LongPath? GetPath(string productId) => GetFilePath(productId);

Source/LibationFileManager/Configuration.HelpText.cs

@@ -107,8 +107,27 @@ namespace LibationFileManager
                 don't have a spatial audio version will be download
                 as usual based on your other file quality settings.
                 """ },
-        }
+            {"LocateAudiobooks","""
-        .AsReadOnly();
+                Scan the contents a folder to find audio files that
+                match books in Libation's database. This is useful
+                if you moved your Books folder or re-installed 
+                Libation and want it to be able to find your
+                already downloaded audiobooks.
+
+                Prerequisite: An audiobook must already exist in
+                Libation's database (through an Audible account
+                scan) for a matching audio file to be found.
+                """ },
+            {"LocateAudiobooksDialog","""
+				Libation will search all .m4b and .mp3 files in a folder, looking for audio files belonging to library books in Libation's database.
+
+				If an audiobook file is found that matches one of Libation's library books, Libation will mark that book as "Liberated" (green stoplight).
+
+				For an audio file to be identified, Libation must have that library book in its database. If you're on a fresh installation of Libation, be sure to add and scan all of your Audible accounts before running this action.
+
+				This may take a while, depending on the number of audio files in the folder and the speed of your storage device.
+				""" }
+        }.AsReadOnly();
 
         public static string GetHelpText(string? settingName)
             => settingName != null && HelpText.TryGetValue(settingName, out var value) ? value : "";

Source/LibationFileManager/Configuration.LibationFiles.cs

@@ -84,7 +84,7 @@ namespace LibationFileManager
 				ProcessDirectory,
 				LocalAppData,
 				UserProfile,
-				Path.Combine(Path.GetTempPath(), "Libation")
+				WinTemp,
 			};
 
 			//Try to find and validate appsettings.json in each folder
@@ -181,7 +181,7 @@ namespace LibationFileManager
 				}
 				catch (Exception e)
 				{
-					Serilog.Log.Error(e, "Failed to run shell command. {Arguments}", psi.ArgumentList);
+					Serilog.Log.Error(e, "Failed to run shell command. {@Arguments}", psi.ArgumentList);
 					return null;
 				}
 			}

Source/LibationFileManager/Configuration.Logging.cs

@@ -27,6 +27,7 @@ namespace LibationFileManager
             //https://github.com/serilog/serilog-settings-configuration/issues/406
             var readerOptions = new ConfigurationReaderOptions(
                 typeof(ILogger).Assembly,                                 // Serilog
+                typeof(LoggerCallerEnrichmentConfiguration).Assembly,     // Dinah.Core
                 typeof(LoggerEnrichmentConfigurationExtensions).Assembly, // Serilog.Exceptions
                 typeof(ConsoleLoggerConfigurationExtensions).Assembly,    // Serilog.Sinks.Console
                 typeof(FileLoggerConfigurationExtensions).Assembly);      // Serilog.Sinks.File

Source/LibationFileManager/Configuration.PersistentSettings.cs

@@ -36,12 +36,12 @@ namespace LibationFileManager
 
 		[return: NotNullIfNotNull(nameof(defaultValue))]
 		public T? GetNonString<T>(T defaultValue, [CallerMemberName] string propertyName = "")
-			=> Settings.GetNonString(propertyName, defaultValue);
+			=> Settings is null ? default : Settings.GetNonString(propertyName, defaultValue);
 
 
 		[return: NotNullIfNotNull(nameof(defaultValue))]
 		public string? GetString(string? defaultValue = null, [CallerMemberName] string propertyName = "")
-			=> Settings.GetString(propertyName, defaultValue);
+			=> Settings?.GetString(propertyName, defaultValue);
 
 		public object? GetObject([CallerMemberName] string propertyName = "") => Settings.GetObject(propertyName);
 
@@ -111,7 +111,34 @@ namespace LibationFileManager
 		public bool BetaOptIn { get => GetNonString(defaultValue: false); set => SetNonString(value); }
 
 		[Description("Location for book storage. Includes destination of newly liberated books")]
-		public LongPath? Books { get => GetString(); set => SetString(value); }
+		public LongPath? Books {
+			get => GetString();
+			set
+			{
+				if (value != Books)
+				{
+					OnPropertyChanging(nameof(Books), Books, value);
+					Settings.SetString(nameof(Books), value);
+					m_BooksCanWrite255UnicodeChars = null;
+					m_BooksCanWriteWindowsInvalidChars = null;
+					OnPropertyChanged(nameof(Books), value);
+				}
+			}
+		}
+
+		private bool? m_BooksCanWrite255UnicodeChars;
+		private bool? m_BooksCanWriteWindowsInvalidChars;
+		/// <summary>
+		/// True if the Books directory can be written to with 255 unicode character filenames
+		/// <para/> Does not persist. Check and set this value at runtime and whenever Books is changed.
+		/// </summary>
+		public bool BooksCanWrite255UnicodeChars => m_BooksCanWrite255UnicodeChars ??= FileSystemTest.CanWrite255UnicodeChars(AudibleFileStorage.BooksDirectory);
+		/// <summary>
+		/// True if the Books directory can be written to with filenames containing characters invalid on Windows (:, *, ?, &lt;, &gt;, |)
+		/// <para/> Always false on Windows platforms.
+		/// <para/> Does not persist. Check and set this value at runtime and whenever Books is changed.
+		/// </summary>
+		public bool BooksCanWriteWindowsInvalidChars => !IsWindows && (m_BooksCanWriteWindowsInvalidChars ??= FileSystemTest.CanWriteWindowsInvalidChars(AudibleFileStorage.BooksDirectory));
 
 		[Description("Overwrite existing files if they already exist?")]
 		public bool OverwriteExisting { get => GetNonString(defaultValue: false); set => SetNonString(value); }
@@ -319,7 +346,7 @@ namespace LibationFileManager
 		#region templates: custom file naming
 
 		[Description("Edit how filename characters are replaced")]
-		public ReplacementCharacters ReplacementCharacters { get => GetNonString(defaultValue: ReplacementCharacters.Default); set => SetNonString(value); }
+		public ReplacementCharacters ReplacementCharacters { get => GetNonString(defaultValue: ReplacementCharacters.Default(IsWindows)); set => SetNonString(value); }
 
 		[Description("How to format the folders in which files will be saved")]
 		public string FolderTemplate

Source/LibationFileManager/Configuration.cs

@@ -3,48 +3,58 @@ using System.IO;
 using System.Linq;
 using Dinah.Core;
 using FileManager;
+using Newtonsoft.Json.Linq;
 
 #nullable enable
 namespace LibationFileManager
 {
 	public partial class Configuration : PropertyChangeFilter
 	{
+		/// <summary>
+		/// Returns true if <see cref="SettingsFilePath"/> exists and the <see cref="Books"/> property has a non-null, non-empty value.
+		/// Does not verify the existence of the <see cref="Books"/> directory.
+		/// </summary>
 		public bool LibationSettingsAreValid => SettingsFileIsValid(SettingsFilePath);
 
+		/// <summary>
+		/// Returns true if <paramref name="settingsFile"/> exists and the <see cref="Books"/> property has a non-null, non-empty value.
+		/// Does not verify the existence of the <see cref="Books"/> directory.
+		/// </summary>
+		/// <param name="settingsFile">File path to the settings JSON file</param>
 		public static bool SettingsFileIsValid(string settingsFile)
 		{
 			if (!Directory.Exists(Path.GetDirectoryName(settingsFile)) || !File.Exists(settingsFile))
 				return false;
 
-			var pDic = new PersistentDictionary(settingsFile, isReadOnly: false);
+			try
-
-			if (pDic.GetString(nameof(Books)) is not string booksDir)
-				return false;
-
-			if (!Directory.Exists(booksDir))
 			{
-				if (Path.GetDirectoryName(settingsFile) is not string dir)
+				var settingsJson = JObject.Parse(File.ReadAllText(settingsFile));
-					throw new DirectoryNotFoundException(settingsFile);
+				return !string.IsNullOrWhiteSpace(settingsJson[nameof(Books)]?.Value<string>());
-
+			}
-				//"Books" is not null, so setup has already been run.
+			catch (Exception ex)
-				//Since Books can't be found, try to create it
+			{
-				//and then revert to the default books directory
+				Serilog.Log.Logger.Error(ex, "Failed to load settings file: {@SettingsFile}", settingsFile);
-				foreach (string d in new string[] { booksDir, DefaultBooksDirectory })
+				try
 				{
+					Serilog.Log.Logger.Information("Deleting invalid settings file: {@SettingsFile}", settingsFile);
+					FileUtility.SaferDelete(settingsFile);
+					Serilog.Log.Logger.Information("Creating a new, empty setting file: {@SettingsFile}", settingsFile);
 					try
 					{
-						Directory.CreateDirectory(d);
+						File.WriteAllText(settingsFile, "{}");
-
+					}
-						pDic.SetString(nameof(Books), d);
+					catch (Exception createEx)
-
+					{
-						return Directory.Exists(d);
+						Serilog.Log.Logger.Error(createEx, "Failed to create new settings file: {@SettingsFile}", settingsFile);
 					}
-					catch { /* Do Nothing */ }
 				}
+				catch (Exception deleteEx)
+				{
+					Serilog.Log.Logger.Error(deleteEx, "Failed to delete the invalid settings file: {@SettingsFile}", settingsFile);
+				}
+
 				return false;
 			}
-
-			return true;
 		}
 
 		#region singleton stuff

Source/LibationFileManager/Templates/SeriesDto.cs

@@ -7,9 +7,9 @@ public record SeriesDto : IFormattable
 {
 	public string Name { get; }
 
-	public float? Number { get; }
+	public string? Number { get; }
 	public string AudibleSeriesId { get; }
-	public SeriesDto(string name, float? number, string audibleSeriesId)
+	public SeriesDto(string name, string? number, string audibleSeriesId)
 	{
 		Name = name;
 		Number = number;

Source/LibationFileManager/Templates/TemplateEditor[T].cs

@@ -68,7 +68,7 @@ namespace LibationFileManager.Templates
 				YearPublished = 2017,
 				Authors = [new("Arthur Conan Doyle", "B000AQ43GQ"), new("Stephen Fry - introductions", "B000APAGVS")],
 				Narrators = [new("Stephen Fry", null)],
-				Series = [new("Sherlock Holmes", 1, "B08376S3R2"), new("Some Other Series", 1, "B000000000")],
+				Series = [new("Sherlock Holmes", "1-6", "B08376S3R2"), new("Book Collection", "1", "B000000000")],
 				Codec = "AAC-LC",
 				LibationVersion = Configuration.LibationVersion?.ToVersionString(),
 				FileVersion = "36217811",

Source/LibationFileManager/Templates/Templates.cs

@@ -157,7 +157,7 @@ namespace LibationFileManager.Templates
 				var maxFilenameLength = LongPath.MaxFilenameLength -
 					(i < pathParts.Count - 1 || string.IsNullOrEmpty(fileExtension) ? 0 : fileExtension.Length + 5);
 
-				while (part.Sum(LongPath.GetFilesystemStringLength) > maxFilenameLength)
+				while (part.Sum(GetFilenameLength) > maxFilenameLength)
 				{
 					int maxLength = part.Max(p => p.Length);
 					var maxEntry = part.First(p => p.Length == maxLength);
@@ -173,6 +173,10 @@ namespace LibationFileManager.Templates
 			return FileUtility.GetValidFilename(fullPath, replacements, fileExtension, returnFirstExisting);
 		}
 
+		private static int GetFilenameLength(string filename)
+			=> Configuration.Instance.BooksCanWrite255UnicodeChars ? filename.Length
+			: System.Text.Encoding.UTF8.GetByteCount(filename);
+
 		/// <summary>
 		/// Organize template parts into directories. Any Extra slashes will be
 		/// returned as empty directories and are taken care of by Path.Combine()

Source/LibationUiBase/ProcessQueue/ProcessQueueViewModel.cs

@@ -1,5 +1,6 @@
 using ApplicationServices;
 using DataLayer;
+using LibationFileManager;
 using LibationUiBase.Forms;
 using System;
 using System.Collections.Generic;
@@ -95,6 +96,9 @@ public class ProcessQueueViewModel : ReactiveObject
 
 	public bool QueueDownloadPdf(IList<LibraryBook> libraryBooks)
 	{
+		if (!IsBooksDirectoryValid())
+			return false;
+
 		var needsPdf = libraryBooks.Where(lb => lb.NeedsPdfDownload()).ToArray();
 		if (needsPdf.Length > 0)
 		{
@@ -107,6 +111,9 @@ public class ProcessQueueViewModel : ReactiveObject
 
 	public bool QueueConvertToMp3(IList<LibraryBook> libraryBooks)
 	{
+		if (!IsBooksDirectoryValid())
+			return false;
+
 		//Only Queue Liberated books for conversion.  This isn't a perfect filter, but it's better than nothing.
 		var preLiberated = libraryBooks.Where(lb => !lb.AbsentFromLastScan && lb.Book.UserDefinedItem.BookStatus is LiberatedStatus.Liberated && lb.Book.ContentType is DataLayer.ContentType.Product).ToArray();
 		if (preLiberated.Length > 0)
@@ -122,6 +129,9 @@ public class ProcessQueueViewModel : ReactiveObject
 
 	public bool QueueDownloadDecrypt(IList<LibraryBook> libraryBooks)
 	{
+		if (!IsBooksDirectoryValid())
+			return false;
+
 		if (libraryBooks.Count == 1)
 		{
 			var item = libraryBooks[0];
@@ -157,6 +167,32 @@ public class ProcessQueueViewModel : ReactiveObject
 		return false;
 	}
 
+	private bool IsBooksDirectoryValid()
+	{
+		if (string.IsNullOrWhiteSpace(Configuration.Instance.Books))
+		{
+			Serilog.Log.Logger.Error("Books location is not set in configuration.");
+			MessageBoxBase.Show(
+				"Please choose a \"Books location\" folder in the Settings menu.",
+				"Books Directory Not Set",
+				MessageBoxButtons.OK,
+				MessageBoxIcon.Error);
+			return false;
+		}
+		else if (AudibleFileStorage.BooksDirectory is null)
+		{
+			Serilog.Log.Logger.Error("Failed to create books directory: {@booksDir}", Configuration.Instance.Books);
+			MessageBoxBase.Show(
+				$"Libation was unable to create the \"Books location\" folder at:\n{Configuration.Instance.Books}\n\nPlease change the Books location in the settings menu.",
+				"Failed to Create Books Directory",
+				MessageBoxButtons.OK,
+				MessageBoxIcon.Error);
+			return false;
+		}
+
+		return true;
+	}
+
 	private bool IsBookInQueue(LibraryBook libraryBook)
 		=> Queue.FirstOrDefault(b => b?.LibraryBook?.Book?.AudibleProductId == libraryBook.Book.AudibleProductId) is not ProcessBookViewModel entry ? false
 		: entry.Status is ProcessBookStatus.Cancelled or ProcessBookStatus.Failed ? !Queue.RemoveCompleted(entry)

Source/LibationWinForms/Dialogs/EditReplacementChars.cs

@@ -50,13 +50,13 @@ namespace LibationWinForms.Dialogs
 		}
 
 		private void loFiDefaultsBtn_Click(object sender, EventArgs e)
-			=> LoadTable(ReplacementCharacters.LoFiDefault.Replacements);
+			=> LoadTable(ReplacementCharacters.LoFiDefault(ntfs: true).Replacements);
 
 		private void defaultsBtn_Click(object sender, EventArgs e)
-			=> LoadTable(ReplacementCharacters.Default.Replacements);
+			=> LoadTable(ReplacementCharacters.Default(ntfs: true).Replacements);
 
 		private void minDefaultBtn_Click(object sender, EventArgs e)
-			=> LoadTable(ReplacementCharacters.Barebones.Replacements);
+			=> LoadTable(ReplacementCharacters.Barebones(ntfs: true).Replacements);
 
 
 		private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)

Source/LibationWinForms/Dialogs/EditTemplateDialog.Designer.cs

@@ -28,161 +28,168 @@
 		/// </summary>
 		private void InitializeComponent()
 		{
-			this.saveBtn = new System.Windows.Forms.Button();
+			saveBtn = new System.Windows.Forms.Button();
-			this.cancelBtn = new System.Windows.Forms.Button();
+			cancelBtn = new System.Windows.Forms.Button();
-			this.templateTb = new System.Windows.Forms.TextBox();
+			templateTb = new System.Windows.Forms.TextBox();
-			this.templateLbl = new System.Windows.Forms.Label();
+			templateLbl = new System.Windows.Forms.Label();
-			this.resetToDefaultBtn = new System.Windows.Forms.Button();
+			resetToDefaultBtn = new System.Windows.Forms.Button();
-			this.listView1 = new System.Windows.Forms.ListView();
+			listView1 = new System.Windows.Forms.ListView();
-			this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
+			columnHeader1 = new System.Windows.Forms.ColumnHeader();
-			this.columnHeader2 = new System.Windows.Forms.ColumnHeader();
+			columnHeader2 = new System.Windows.Forms.ColumnHeader();
-			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
+			richTextBox1 = new System.Windows.Forms.RichTextBox();
-			this.warningsLbl = new System.Windows.Forms.Label();
+			warningsLbl = new System.Windows.Forms.Label();
-			this.exampleLbl = new System.Windows.Forms.Label();
+			exampleLbl = new System.Windows.Forms.Label();
-			this.SuspendLayout();
+			llblGoToWiki = new System.Windows.Forms.LinkLabel();
+			SuspendLayout();
 			// 
 			// saveBtn
 			// 
-			this.saveBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+			saveBtn.Anchor = System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right;
-			this.saveBtn.Location = new System.Drawing.Point(714, 345);
+			saveBtn.Location = new System.Drawing.Point(714, 345);
-			this.saveBtn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
+			saveBtn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
-			this.saveBtn.Name = "saveBtn";
+			saveBtn.Name = "saveBtn";
-			this.saveBtn.Size = new System.Drawing.Size(88, 27);
+			saveBtn.Size = new System.Drawing.Size(88, 27);
-			this.saveBtn.TabIndex = 98;
+			saveBtn.TabIndex = 98;
-			this.saveBtn.Text = "Save";
+			saveBtn.Text = "Save";
-			this.saveBtn.UseVisualStyleBackColor = true;
+			saveBtn.UseVisualStyleBackColor = true;
-			this.saveBtn.Click += new System.EventHandler(this.saveBtn_Click);
+			saveBtn.Click += saveBtn_Click;
 			// 
 			// cancelBtn
 			// 
-			this.cancelBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
+			cancelBtn.Anchor = System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right;
-			this.cancelBtn.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+			cancelBtn.DialogResult = System.Windows.Forms.DialogResult.Cancel;
-			this.cancelBtn.Location = new System.Drawing.Point(832, 345);
+			cancelBtn.Location = new System.Drawing.Point(832, 345);
-			this.cancelBtn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
+			cancelBtn.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
-			this.cancelBtn.Name = "cancelBtn";
+			cancelBtn.Name = "cancelBtn";
-			this.cancelBtn.Size = new System.Drawing.Size(88, 27);
+			cancelBtn.Size = new System.Drawing.Size(88, 27);
-			this.cancelBtn.TabIndex = 99;
+			cancelBtn.TabIndex = 99;
-			this.cancelBtn.Text = "Cancel";
+			cancelBtn.Text = "Cancel";
-			this.cancelBtn.UseVisualStyleBackColor = true;
+			cancelBtn.UseVisualStyleBackColor = true;
-			this.cancelBtn.Click += new System.EventHandler(this.cancelBtn_Click);
+			cancelBtn.Click += cancelBtn_Click;
 			// 
 			// templateTb
 			// 
-			this.templateTb.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+			templateTb.Anchor = System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right;
-            | System.Windows.Forms.AnchorStyles.Right)));
+			templateTb.Location = new System.Drawing.Point(12, 27);
-			this.templateTb.Location = new System.Drawing.Point(12, 27);
+			templateTb.Name = "templateTb";
-			this.templateTb.Name = "templateTb";
+			templateTb.Size = new System.Drawing.Size(779, 23);
-			this.templateTb.Size = new System.Drawing.Size(779, 23);
+			templateTb.TabIndex = 1;
-			this.templateTb.TabIndex = 1;
+			templateTb.TextChanged += templateTb_TextChanged;
-			this.templateTb.TextChanged += new System.EventHandler(this.templateTb_TextChanged);
 			// 
 			// templateLbl
 			// 
-			this.templateLbl.AutoSize = true;
+			templateLbl.AutoSize = true;
-			this.templateLbl.Location = new System.Drawing.Point(12, 9);
+			templateLbl.Location = new System.Drawing.Point(12, 9);
-			this.templateLbl.Name = "templateLbl";
+			templateLbl.Name = "templateLbl";
-			this.templateLbl.Size = new System.Drawing.Size(89, 15);
+			templateLbl.Size = new System.Drawing.Size(89, 15);
-			this.templateLbl.TabIndex = 0;
+			templateLbl.TabIndex = 0;
-			this.templateLbl.Text = "[template desc]";
+			templateLbl.Text = "[template desc]";
 			// 
 			// resetToDefaultBtn
 			// 
-			this.resetToDefaultBtn.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+			resetToDefaultBtn.Anchor = System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right;
-			this.resetToDefaultBtn.Location = new System.Drawing.Point(797, 26);
+			resetToDefaultBtn.Location = new System.Drawing.Point(797, 26);
-			this.resetToDefaultBtn.Name = "resetToDefaultBtn";
+			resetToDefaultBtn.Name = "resetToDefaultBtn";
-			this.resetToDefaultBtn.Size = new System.Drawing.Size(124, 23);
+			resetToDefaultBtn.Size = new System.Drawing.Size(124, 23);
-			this.resetToDefaultBtn.TabIndex = 2;
+			resetToDefaultBtn.TabIndex = 2;
-			this.resetToDefaultBtn.Text = "Reset to default";
+			resetToDefaultBtn.Text = "Reset to default";
-			this.resetToDefaultBtn.UseVisualStyleBackColor = true;
+			resetToDefaultBtn.UseVisualStyleBackColor = true;
-			this.resetToDefaultBtn.Click += new System.EventHandler(this.resetToDefaultBtn_Click);
+			resetToDefaultBtn.Click += resetToDefaultBtn_Click;
 			// 
 			// listView1
 			// 
-			this.listView1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+			listView1.Anchor = System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left;
-            | System.Windows.Forms.AnchorStyles.Left)));
+			listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] { columnHeader1, columnHeader2 });
-			this.listView1.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
+			listView1.FullRowSelect = true;
-            this.columnHeader1,
+			listView1.GridLines = true;
-            this.columnHeader2});
+			listView1.Location = new System.Drawing.Point(12, 56);
-			this.listView1.FullRowSelect = true;
+			listView1.MultiSelect = false;
-			this.listView1.GridLines = true;
+			listView1.Name = "listView1";
-			this.listView1.Location = new System.Drawing.Point(12, 56);
+			listView1.Size = new System.Drawing.Size(328, 283);
-			this.listView1.MultiSelect = false;
+			listView1.TabIndex = 3;
-			this.listView1.Name = "listView1";
+			listView1.UseCompatibleStateImageBehavior = false;
-			this.listView1.Size = new System.Drawing.Size(328, 283);
+			listView1.View = System.Windows.Forms.View.Details;
-			this.listView1.TabIndex = 3;
+			listView1.DoubleClick += listView1_DoubleClick;
-			this.listView1.UseCompatibleStateImageBehavior = false;
-			this.listView1.View = System.Windows.Forms.View.Details;
-			this.listView1.DoubleClick += new System.EventHandler(this.listView1_DoubleClick);
 			// 
 			// columnHeader1
 			// 
-			this.columnHeader1.Text = "Tag";
+			columnHeader1.Text = "Tag";
-			this.columnHeader1.Width = 137;
+			columnHeader1.Width = 137;
 			// 
 			// columnHeader2
 			// 
-			this.columnHeader2.Text = "Description";
+			columnHeader2.Text = "Description";
-			this.columnHeader2.Width = 170;
+			columnHeader2.Width = 170;
 			// 
 			// richTextBox1
 			// 
-			this.richTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+			richTextBox1.Anchor = System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right;
-            | System.Windows.Forms.AnchorStyles.Left) 
+			richTextBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
-            | System.Windows.Forms.AnchorStyles.Right)));
+			richTextBox1.Location = new System.Drawing.Point(346, 74);
-			this.richTextBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
+			richTextBox1.Name = "richTextBox1";
-			this.richTextBox1.Location = new System.Drawing.Point(346, 74);
+			richTextBox1.ReadOnly = true;
-			this.richTextBox1.Name = "richTextBox1";
+			richTextBox1.Size = new System.Drawing.Size(574, 185);
-			this.richTextBox1.ReadOnly = true;
+			richTextBox1.TabIndex = 5;
-			this.richTextBox1.Size = new System.Drawing.Size(574, 185);
+			richTextBox1.Text = "";
-			this.richTextBox1.TabIndex = 5;
-			this.richTextBox1.Text = "";
 			// 
 			// warningsLbl
 			// 
-			this.warningsLbl.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			warningsLbl.Anchor = System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left;
-			this.warningsLbl.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
+			warningsLbl.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Bold);
-			this.warningsLbl.ForeColor = System.Drawing.Color.Firebrick;
+			warningsLbl.ForeColor = System.Drawing.Color.Firebrick;
-			this.warningsLbl.Location = new System.Drawing.Point(346, 262);
+			warningsLbl.Location = new System.Drawing.Point(346, 262);
-			this.warningsLbl.Name = "warningsLbl";
+			warningsLbl.Name = "warningsLbl";
-			this.warningsLbl.Size = new System.Drawing.Size(574, 77);
+			warningsLbl.Size = new System.Drawing.Size(574, 77);
-			this.warningsLbl.TabIndex = 6;
+			warningsLbl.TabIndex = 6;
-			this.warningsLbl.Text = "[warnings]";
+			warningsLbl.Text = "[warnings]";
 			// 
 			// exampleLbl
 			// 
-			this.exampleLbl.AutoSize = true;
+			exampleLbl.AutoSize = true;
-			this.exampleLbl.Location = new System.Drawing.Point(346, 56);
+			exampleLbl.Location = new System.Drawing.Point(346, 56);
-			this.exampleLbl.Name = "exampleLbl";
+			exampleLbl.Name = "exampleLbl";
-			this.exampleLbl.Size = new System.Drawing.Size(55, 15);
+			exampleLbl.Size = new System.Drawing.Size(54, 15);
-			this.exampleLbl.TabIndex = 4;
+			exampleLbl.TabIndex = 4;
-			this.exampleLbl.Text = "Example:";
+			exampleLbl.Text = "Example:";
+			// 
+			// llblGoToWiki
+			// 
+			llblGoToWiki.AutoSize = true;
+			llblGoToWiki.Location = new System.Drawing.Point(12, 357);
+			llblGoToWiki.Name = "llblGoToWiki";
+			llblGoToWiki.Size = new System.Drawing.Size(229, 15);
+			llblGoToWiki.TabIndex = 100;
+			llblGoToWiki.TabStop = true;
+			llblGoToWiki.Text = "Read about naming templates on the Wiki";
+			llblGoToWiki.LinkClicked += llblGoToWiki_LinkClicked;
 			// 
 			// EditTemplateDialog
 			// 
-			this.AcceptButton = this.saveBtn;
+			AcceptButton = saveBtn;
-			this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
+			AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
-			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
+			AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
-			this.CancelButton = this.cancelBtn;
+			CancelButton = cancelBtn;
-			this.ClientSize = new System.Drawing.Size(933, 388);
+			ClientSize = new System.Drawing.Size(933, 388);
-			this.Controls.Add(this.exampleLbl);
+			Controls.Add(llblGoToWiki);
-			this.Controls.Add(this.warningsLbl);
+			Controls.Add(exampleLbl);
-			this.Controls.Add(this.richTextBox1);
+			Controls.Add(warningsLbl);
-			this.Controls.Add(this.listView1);
+			Controls.Add(richTextBox1);
-			this.Controls.Add(this.resetToDefaultBtn);
+			Controls.Add(listView1);
-			this.Controls.Add(this.templateLbl);
+			Controls.Add(resetToDefaultBtn);
-			this.Controls.Add(this.templateTb);
+			Controls.Add(templateLbl);
-			this.Controls.Add(this.cancelBtn);
+			Controls.Add(templateTb);
-			this.Controls.Add(this.saveBtn);
+			Controls.Add(cancelBtn);
-			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+			Controls.Add(saveBtn);
-			this.Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
+			FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
-			this.MaximizeBox = false;
+			Margin = new System.Windows.Forms.Padding(4, 3, 4, 3);
-			this.MinimizeBox = false;
+			MaximizeBox = false;
-			this.Name = "EditTemplateDialog";
+			MinimizeBox = false;
-			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+			Name = "EditTemplateDialog";
-			this.Text = "Edit Template";
+			StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
-			this.Load += new System.EventHandler(this.EditTemplateDialog_Load);
+			Text = "Edit Template";
-			this.ResumeLayout(false);
+			Load += EditTemplateDialog_Load;
-			this.PerformLayout();
+			ResumeLayout(false);
+			PerformLayout();
 
 		}
 
@@ -198,5 +205,6 @@
 		private System.Windows.Forms.RichTextBox richTextBox1;
 		private System.Windows.Forms.Label warningsLbl;
 		private System.Windows.Forms.Label exampleLbl;
+		private System.Windows.Forms.LinkLabel llblGoToWiki;
 	}
 }

Source/LibationWinForms/Dialogs/EditTemplateDialog.cs

@@ -12,7 +12,7 @@ namespace LibationWinForms.Dialogs
 	{
 		private void resetTextBox(string value) => this.templateTb.Text = value;
 		private Configuration config { get; } = Configuration.Instance;
-		private ITemplateEditor templateEditor { get;}		
+		private ITemplateEditor templateEditor { get; }
 
 		public EditTemplateDialog()
 		{
@@ -150,5 +150,11 @@ namespace LibationWinForms.Dialogs
 			templateTb.Text = text.Insert(selStart, itemText);
 			templateTb.SelectionStart = selStart + itemText.Length;
 		}
+
+		private void llblGoToWiki_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
+		{
+			Go.To.Url(@"ht" + "tps://github.com/rmcrackan/Libation/blob/master/Documentation/NamingTemplates.md");
+			e.Link.Visited = true;
+		}
 	}
 }

Source/LibationWinForms/Dialogs/EditTemplateDialog.resx

@@ -1,4 +1,64 @@
-<root>
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">

Source/LibationWinForms/Dialogs/LocateAudiobooksDialog.cs

@@ -83,9 +83,11 @@ namespace LibationWinForms.Dialogs
 					if (lb.Book.UserDefinedItem.BookStatus is not LiberatedStatus.Liberated)
 						await Task.Run(() => lb.UpdateBookStatus(LiberatedStatus.Liberated));
 
+					tokenSource.Token.ThrowIfCancellationRequested();
 					this.Invoke(FileFound, this, book);
 				}
-				catch(Exception ex)
+				catch (OperationCanceledException) { }
+				catch (Exception ex)
 				{
 					Serilog.Log.Error(ex, "Error adding found audiobook file to Libation. {@audioFile}", book);
 				}

Source/LibationWinForms/Dialogs/SettingsDialog.Important.cs

@@ -7,6 +7,7 @@ using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 
+#nullable enable
 namespace LibationWinForms.Dialogs
 {
 	public partial class SettingsDialog
@@ -55,7 +56,7 @@ namespace LibationWinForms.Dialogs
 				},
 				Configuration.KnownDirectories.UserProfile,
 				"Books");
-			booksSelectControl.SelectDirectory(config.Books.PathWithoutPrefix);
+			booksSelectControl.SelectDirectory(config.Books?.PathWithoutPrefix ?? "");
 
 			saveEpisodesToSeriesFolderCbox.Checked = config.SavePodcastsToParentFolder;
 			overwriteExistingCbox.Checked = config.OverwriteExisting;
@@ -63,7 +64,7 @@ namespace LibationWinForms.Dialogs
 			gridFontScaleFactorTbar.Value = scaleFactorToLinearRange(config.GridFontScaleFactor);
 		}
 
-		private void Save_Important(Configuration config)
+		private bool Save_Important(Configuration config)
 		{
 			var newBooks = booksSelectControl.SelectedDirectory;
 
@@ -73,19 +74,29 @@ namespace LibationWinForms.Dialogs
 			if (string.IsNullOrWhiteSpace(newBooks))
 			{
 				validationError("Cannot set Books Location to blank", "Location is blank");
-				return;
+				return false;
+			}
+			LongPath lonNewBooks = newBooks;
+			if (!Directory.Exists(lonNewBooks))
+			{
+				try
+				{
+					Directory.CreateDirectory(lonNewBooks);
+				}
+				catch (Exception ex)
+				{
+					validationError($"Error creating Books Location:\r\n{ex.Message}", "Error creating directory");
+					return false;
+				}
 			}
 			#endregion
 
-			LongPath lonNewBooks = newBooks;
-			if (!Directory.Exists(lonNewBooks))
-				Directory.CreateDirectory(lonNewBooks);
 
 			config.Books = newBooks;
 
 			{
 				var logLevelOld = config.LogLevel;
-				var logLevelNew = (Serilog.Events.LogEventLevel)loggingLevelCb.SelectedItem;
+				var logLevelNew = (loggingLevelCb.SelectedItem as Serilog.Events.LogEventLevel?) ?? Serilog.Events.LogEventLevel.Information;
 
 				config.LogLevel = logLevelNew;
 
@@ -97,9 +108,9 @@ namespace LibationWinForms.Dialogs
 			config.SavePodcastsToParentFolder = saveEpisodesToSeriesFolderCbox.Checked;
 			config.OverwriteExisting = overwriteExistingCbox.Checked;
 
-
+			config.CreationTime = (creationTimeCb.SelectedItem as EnumDisplay<Configuration.DateTimeSource>)?.Value ?? Configuration.DateTimeSource.File;
-			config.CreationTime = ((EnumDisplay<Configuration.DateTimeSource>)creationTimeCb.SelectedItem).Value;
+			config.LastWriteTime = (lastWriteTimeCb.SelectedItem as EnumDisplay<Configuration.DateTimeSource>)?.Value ?? Configuration.DateTimeSource.File;
-			config.LastWriteTime = ((EnumDisplay<Configuration.DateTimeSource>)lastWriteTimeCb.SelectedItem).Value;
+			return true;
 		}
 
 		private static int scaleFactorToLinearRange(float scaleFactor)

Source/LibationWinForms/Dialogs/SettingsDialog.cs

@@ -43,7 +43,7 @@ namespace LibationWinForms.Dialogs
 
 		private void saveBtn_Click(object sender, EventArgs e)
 		{
-			Save_Important(config);
+			if (!Save_Important(config)) return;
 			Save_ImportLibrary(config);
 			Save_DownloadDecrypt(config);
 			Save_AudioSettings(config);

Source/LibationWinForms/Form1.ScanManual.cs

@@ -16,7 +16,8 @@ namespace LibationWinForms
 		private void Configure_ScanManual()
         {
 			this.Load += refreshImportMenu;
-			AccountsSettingsPersister.Saved += refreshImportMenu;
+			AccountsSettingsPersister.Saved += (_, _) => Invoke(refreshImportMenu, null, null);
+			locateAudiobooksToolStripMenuItem.ToolTipText = Configuration.GetHelpText("LocateAudiobooks");
 		}
 
 		private void refreshImportMenu(object _, EventArgs __)
@@ -96,7 +97,16 @@ namespace LibationWinForms
 
 		private void locateAudiobooksToolStripMenuItem_Click(object sender, EventArgs e)
 		{
-			new LocateAudiobooksDialog().ShowDialog();
+			var result = MessageBox.Show(
+				this,
+				Configuration.GetHelpText(nameof(LocateAudiobooksDialog)),
+				"Locate Previously-Liberated Audiobook Files",
+				MessageBoxButtons.OKCancel,
+				MessageBoxIcon.Information,
+				MessageBoxDefaultButton.Button1);
+
+			if (result is DialogResult.OK)
+				new LocateAudiobooksDialog().ShowDialog();
 		}
 	}
 }

Source/LibationWinForms/Form1.Settings.cs

@@ -6,9 +6,29 @@ namespace LibationWinForms
 {
     public partial class Form1
     {
-        private void Configure_Settings() { }
+        private void Configure_Settings()
+		{
+			Shown += FormShown_Settings;
+		}
 
-        private void accountsToolStripMenuItem_Click(object sender, EventArgs e) => new AccountsDialog().ShowDialog();
+		private void FormShown_Settings(object sender, EventArgs e)
+		{
+			if (LibationFileManager.AudibleFileStorage.BooksDirectory is null)
+			{
+				var result = MessageBox.Show(
+					this,
+					"Please set a valid Books location in the settings dialog.",
+					"Books Directory Not Set",
+					MessageBoxButtons.OKCancel,
+					MessageBoxIcon.Warning,
+					MessageBoxDefaultButton.Button1);
+
+				if (result is DialogResult.OK)
+					new SettingsDialog().ShowDialog(this);
+			}
+		}
+
+		private void accountsToolStripMenuItem_Click(object sender, EventArgs e) => new AccountsDialog().ShowDialog();
 
         private void basicSettingsToolStripMenuItem_Click(object sender, EventArgs e) => new SettingsDialog().ShowDialog();
 

Source/LibationWinForms/Form1._NonUI.cs

@@ -47,7 +47,7 @@ namespace LibationWinForms
 					FileUtility.SaferMoveToValidPath(
 						e.SettingsFilePath,
 						e.SettingsFilePath,
-						ReplacementCharacters.Barebones,
+						Configuration.Instance.ReplacementCharacters,
 						"bak");
 
 				AudibleApiStorage.EnsureAccountsSettingsFileExists();

Source/LibationWinForms/Program.cs

@@ -148,7 +148,10 @@ namespace LibationWinForms
 			}
 
 			if (setupDialog.IsNewUser)
+			{
 				Configuration.SetLibationFiles(defaultLibationFilesDir);
+				config.Books = Configuration.DefaultBooksDirectory;
+			}
 			else if (setupDialog.IsReturningUser)
 			{
 				var libationFilesDialog = new LibationFilesDialog();
@@ -175,16 +178,11 @@ namespace LibationWinForms
 					CancelInstallation();
 					return;
 				}
+				config.Books = Configuration.DefaultBooksDirectory;
 			}
 
-			// INIT DEFAULT SETTINGS
+			if (!config.LibationSettingsAreValid)
-			// if 'new user' was clicked, or if 'returning user' chose new install: show basic settings dialog
+				CancelInstallation();
-			config.Books ??= Configuration.DefaultBooksDirectory;
-
-			if (config.LibationSettingsAreValid)
-				return;
-
-			CancelInstallation();
 		}
 
 		/// <summary>migrations which require Forms or are long-running</summary>

Source/LibationWinForms/Walkthrough.cs

@@ -1,5 +1,6 @@
 using ApplicationServices;
 using AudibleUtilities;
+using Dinah.Core;
 using Dinah.Core.StepRunner;
 using LibationFileManager;
 using LibationWinForms.Dialogs;
@@ -163,7 +164,7 @@ namespace LibationWinForms
 			var books = DbContexts.GetLibrary_Flat_NoTracking();
 			if (books.Count == 0) return true;
 
-			var firstAuthor = getFirstAuthor();
+			var firstAuthor = getFirstAuthor()?.SurroundWithQuotes();
 			if (firstAuthor == null) return true;
 
 			if (!ProceedMessageBox("You can filter the grid entries by searching", "Searching"))
@@ -196,7 +197,7 @@ namespace LibationWinForms
 
 		private async Task<bool> ShowQuickFilters()
 		{
-			var firstAuthor = getFirstAuthor();
+			var firstAuthor = getFirstAuthor()?.SurroundWithQuotes();
 			if (firstAuthor == null) return true;
 
 			if (!ProceedMessageBox("Queries that you perform regularly can be added to 'Quick Filters'", "Quick Filters"))

Source/_Tests/FileManager.Tests/FileUtilityTests.cs

@@ -12,9 +12,9 @@ namespace FileUtilityTests
 	[TestClass]
 	public class GetSafePath
 	{
-		static readonly ReplacementCharacters Default = ReplacementCharacters.Default;
+		static readonly ReplacementCharacters Default = ReplacementCharacters.Default(Environment.OSVersion.Platform == PlatformID.Win32NT);
-		static readonly ReplacementCharacters LoFiDefault = ReplacementCharacters.LoFiDefault;
+		static readonly ReplacementCharacters LoFiDefault = ReplacementCharacters.LoFiDefault(Environment.OSVersion.Platform == PlatformID.Win32NT);
-		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones;
+		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		[TestMethod]
 		public void null_path_throws() => Assert.ThrowsException<ArgumentNullException>(() => FileUtility.GetSafePath(null, Default));
@@ -98,9 +98,9 @@ namespace FileUtilityTests
 	[TestClass]
 	public class GetSafeFileName
 	{
-		static readonly ReplacementCharacters Default = ReplacementCharacters.Default;
+		static readonly ReplacementCharacters Default = ReplacementCharacters.Default(Environment.OSVersion.Platform == PlatformID.Win32NT);
-		static readonly ReplacementCharacters LoFiDefault = ReplacementCharacters.LoFiDefault;
+		static readonly ReplacementCharacters LoFiDefault = ReplacementCharacters.LoFiDefault(Environment.OSVersion.Platform == PlatformID.Win32NT);
-		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones;
+		static readonly ReplacementCharacters Barebones = ReplacementCharacters.Barebones(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		// needs separate method. middle null param not running correctly in TestExplorer when used in DataRow()
 		[TestMethod]
@@ -193,7 +193,7 @@ namespace FileUtilityTests
 	[TestClass]
 	public class GetValidFilename
 	{
-		static ReplacementCharacters Replacements = ReplacementCharacters.Default;
+		static ReplacementCharacters Replacements = ReplacementCharacters.Default(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		[TestMethod]
 		// dot-files

Source/_Tests/LibationFileManager.Tests/TemplatesTests.cs

@@ -23,8 +23,17 @@ namespace TemplatesTests
 
 	public static class Shared
 	{
+		[System.Runtime.CompilerServices.ModuleInitializer]
+		public static void Init()
+		{
+			var thisDir = Path.GetDirectoryName(Environment.ProcessPath);
+			LibationFileManager.Configuration.SetLibationFiles(thisDir);
+			if (!LibationFileManager.Configuration.Instance.LibationSettingsAreValid)
+				LibationFileManager.Configuration.Instance.Books = Path.Combine(thisDir, "Books");
+		}
+
 		public static LibraryBookDto GetLibraryBook()
-			=> GetLibraryBook([new SeriesDto("Sherlock Holmes", 1, "B08376S3R2")]);
+			=> GetLibraryBook([new SeriesDto("Sherlock Holmes", "1", "B08376S3R2")]);
 
 		public static LibraryBookDto GetLibraryBook(IEnumerable<SeriesDto> series)
 			=> new()
@@ -66,7 +75,7 @@ namespace TemplatesTests
 	[TestClass]
 	public class getFileNamingTemplate
 	{
-		static ReplacementCharacters Replacements = ReplacementCharacters.Default;
+		static ReplacementCharacters Replacements = ReplacementCharacters.Default(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		[TestMethod]
 		[DataRow(null)]
@@ -367,12 +376,13 @@ namespace TemplatesTests
 
 
 		[TestMethod]
-		[DataRow("<series>", "Series A, Series B, Series C")]
+		[DataRow("<series>", "Series A, Series B, Series C, Series D")]
-		[DataRow("<series[]>", "Series A, Series B, Series C")]
+		[DataRow("<series[]>", "Series A, Series B, Series C, Series D")]
 		[DataRow("<series[max(1)]>", "Series A")]
 		[DataRow("<series[max(2)]>", "Series A, Series B")]
 		[DataRow("<series[max(3)]>", "Series A, Series B, Series C")]
-		[DataRow("<series[format({N}, {#}, {ID}) separator(; )]>", "Series A, 1, B1; Series B, 6, B2; Series C, 2, B3")]
+		[DataRow("<series[max(4)]>", "Series A, Series B, Series C, Series D")]
+		[DataRow("<series[format({N}, {#}, {ID}) separator(; )]>", "Series A, 1, B1; Series B, 6, B2; Series C, 2, B3; Series D, 1-5, B4")]
 		[DataRow("<series[format({N}, {#}, {ID}) separator(; ) max(3)]>", "Series A, 1, B1; Series B, 6, B2; Series C, 2, B3")]
 		[DataRow("<series[format({N}, {#}, {ID}) separator(; ) max(2)]>", "Series A, 1, B1; Series B, 6, B2")]
 		[DataRow("<first series>", "Series A")]
@@ -383,9 +393,10 @@ namespace TemplatesTests
 			var bookDto = GetLibraryBook();
 			bookDto.Series =
 			[
-				new("Series A", 1,  "B1"),
+				new("Series A", "1",  "B1"),
-				new("Series B", 6,  "B2"),
+				new("Series B", "6",  "B2"),
-				new("Series C", 2,  "B3")
+				new("Series C", "2",  "B3"),
+				new("Series D", "1-5",  "B4"),
 			];
 			
 			Templates.TryGetTemplate<Templates.FileTemplate>(template, out var fileTemplate).Should().BeTrue();
@@ -451,7 +462,7 @@ namespace Templates_Other
 	[TestClass]
 	public class GetFilePath
 	{
-		static ReplacementCharacters Replacements = ReplacementCharacters.Default;
+		static ReplacementCharacters Replacements = ReplacementCharacters.Default(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		[TestMethod]
 		[DataRow(@"C:\foo\bar", @"\\Folder\<title>\[<id>]\\", @"C:\foo\bar\Folder\my_ book 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\[ID123456].txt", PlatformID.Win32NT)]
@@ -887,7 +898,7 @@ namespace Templates_ChapterFile_Tests
 	[TestClass]
 	public class GetFilename
 	{
-		static readonly ReplacementCharacters Default = ReplacementCharacters.Default;
+		static readonly ReplacementCharacters Default = ReplacementCharacters.Default(Environment.OSVersion.Platform == PlatformID.Win32NT);
 
 		[TestMethod]
 		[DataRow("[<id>] <ch# 0> of <ch count> - <ch title>", @"C:\foo\", "txt", 6, 10, "chap", @"C:\foo\[asin] 06 of 10 - chap.txt", PlatformID.Win32NT)]