diff --git a/Source/AppScaffolding/AppScaffolding.csproj b/Source/AppScaffolding/AppScaffolding.csproj
index 3bde0ed0..7406b271 100644
--- a/Source/AppScaffolding/AppScaffolding.csproj
+++ b/Source/AppScaffolding/AppScaffolding.csproj
@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
-    <Version>8.4.3.1</Version>
+    <Version>8.4.4.1</Version>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Octokit" Version="2.0.0" />
diff --git a/Source/FileLiberator/DownloadPdf.cs b/Source/FileLiberator/DownloadPdf.cs
index 527c3244..9f259cc4 100644
--- a/Source/FileLiberator/DownloadPdf.cs
+++ b/Source/FileLiberator/DownloadPdf.cs
@@ -24,7 +24,7 @@ namespace FileLiberator
 		{
 			OnBegin(libraryBook);
 
-			try
+            try
 			{
 				var proposedDownloadFilePath = getProposedDownloadFilePath(libraryBook);
 				var actualDownloadedFilePath = await downloadPdfAsync(libraryBook, proposedDownloadFilePath);
@@ -32,13 +32,22 @@ namespace FileLiberator
 
 				libraryBook.Book.UpdatePdfStatus(result.IsSuccess ? LiberatedStatus.Liberated : LiberatedStatus.NotLiberated);
 
-				return result;
-			}
+                return result;
+            }
+			catch (Exception ex)
+            {
+                Serilog.Log.Logger.Error(ex, "Error downloading PDF");
+
+                var result = new StatusHandler();
+                result.AddError($"Error downloading PDF. See log for details. Error summary: {ex.Message}");
+
+                return result;
+            }
 			finally
 			{
 				OnCompleted(libraryBook);
-			}
-		}
+            }
+        }
 
 		private static string getProposedDownloadFilePath(LibraryBook libraryBook)
 		{
diff --git a/Source/LibationAvalonia/ViewModels/ProcessBookViewModel.cs b/Source/LibationAvalonia/ViewModels/ProcessBookViewModel.cs
index 0acb338c..c4008b58 100644
--- a/Source/LibationAvalonia/ViewModels/ProcessBookViewModel.cs
+++ b/Source/LibationAvalonia/ViewModels/ProcessBookViewModel.cs
@@ -7,6 +7,7 @@ using Avalonia.Media;
 using Avalonia.Media.Imaging;
 using DataLayer;
 using Dinah.Core;
+using Dinah.Core.ErrorHandling;
 using FileLiberator;
 using LibationFileManager;
 using ReactiveUI;
@@ -289,25 +290,36 @@ namespace LibationAvalonia.ViewModels
 			Logger.Info($"{((Processable)sender).Name} Step, Completed: {libraryBook.Book}");
 			UnlinkProcessable((Processable)sender);
 
-			if (Processes.Count > 0)
-			{
-				NextProcessable();
-				LinkProcessable(CurrentProcessable);
-				var result = await CurrentProcessable.ProcessSingleAsync(libraryBook, validate: true);
+            if (Processes.Count == 0)
+            {
+                Completed?.Invoke(this, EventArgs.Empty);
+				return;
+            }
 
-				if (result.HasErrors)
-				{
-					foreach (var errorMessage in result.Errors.Where(e => e != "Validation failed"))
-						Logger.Error(errorMessage);
+            NextProcessable();
+            LinkProcessable(CurrentProcessable);
 
-					Completed?.Invoke(this, EventArgs.Empty);
-				}
-			}
-			else
+			StatusHandler result;
+            try
 			{
-				Completed?.Invoke(this, EventArgs.Empty);
-			}
-		}
+				result = await CurrentProcessable.ProcessSingleAsync(libraryBook, validate: true);
+            }
+            catch (Exception ex)
+            {
+                Serilog.Log.Logger.Error(ex, $"{nameof(Processable_Completed)} error");
+
+                result = new StatusHandler();
+                result.AddError($"{nameof(Processable_Completed)} error. See log for details. Error summary: {ex.Message}");
+            }
+
+            if (result.HasErrors)
+            {
+                foreach (var errorMessage in result.Errors.Where(e => e != "Validation failed"))
+                    Logger.Error(errorMessage);
+
+                Completed?.Invoke(this, EventArgs.Empty);
+            }
+        }
 
 		#endregion
 
diff --git a/Source/LibationWinForms/ProcessQueue/ProcessBook.cs b/Source/LibationWinForms/ProcessQueue/ProcessBook.cs
index 4d538a43..fffd0d78 100644
--- a/Source/LibationWinForms/ProcessQueue/ProcessBook.cs
+++ b/Source/LibationWinForms/ProcessQueue/ProcessBook.cs
@@ -9,6 +9,7 @@ using System.Windows.Forms;
 using ApplicationServices;
 using DataLayer;
 using Dinah.Core;
+using Dinah.Core.ErrorHandling;
 using Dinah.Core.WindowsDesktop.Drawing;
 using FileLiberator;
 using LibationFileManager;
@@ -279,36 +280,47 @@ namespace LibationWinForms.ProcessQueue
 			updateBookInfo();
 		}
 
-		private async void Processable_Completed(object sender, LibraryBook libraryBook)
-		{
-			Logger.Info($"{((Processable)sender).Name} Step, Completed: {libraryBook.Book}");
-			UnlinkProcessable((Processable)sender);
+        private async void Processable_Completed(object sender, LibraryBook libraryBook)
+        {
+            Logger.Info($"{((Processable)sender).Name} Step, Completed: {libraryBook.Book}");
+            UnlinkProcessable((Processable)sender);
 
-			if (Processes.Count > 0)
-			{
-				NextProcessable();
-				LinkProcessable(CurrentProcessable);
-				var result = await CurrentProcessable.ProcessSingleAsync(libraryBook, validate: true);
+            if (Processes.Count == 0)
+            {
+                Completed?.Invoke(this, EventArgs.Empty);
+                return;
+            }
 
-				if (result.HasErrors)
-				{
-					foreach (var errorMessage in result.Errors.Where(e => e != "Validation failed"))
-						Logger.Error(errorMessage);
+            NextProcessable();
+            LinkProcessable(CurrentProcessable);
 
-					Completed?.Invoke(this, EventArgs.Empty);
-				}
-			}
-			else
-			{
-				Completed?.Invoke(this, EventArgs.Empty);
-			}
-		}
+            StatusHandler result;
+            try
+            {
+                result = await CurrentProcessable.ProcessSingleAsync(libraryBook, validate: true);
+            }
+            catch (Exception ex)
+            {
+                Serilog.Log.Logger.Error(ex, $"{nameof(Processable_Completed)} error");
 
-		#endregion
+                result = new StatusHandler();
+                result.AddError($"{nameof(Processable_Completed)} error. See log for details. Error summary: {ex.Message}");
+            }
 
-		#region Failure Handler
+            if (result.HasErrors)
+            {
+                foreach (var errorMessage in result.Errors.Where(e => e != "Validation failed"))
+                    Logger.Error(errorMessage);
 
-		private ProcessBookResult showRetry(LibraryBook libraryBook)
+                Completed?.Invoke(this, EventArgs.Empty);
+            }
+        }
+
+        #endregion
+
+        #region Failure Handler
+
+        private ProcessBookResult showRetry(LibraryBook libraryBook)
 		{
 			Logger.Error("ERROR. All books have not been processed. Most recent book: processing failed");