diff --git a/Source/AppScaffolding/LibationScaffolding.cs b/Source/AppScaffolding/LibationScaffolding.cs
index 64a6f9fc..5a86d7b3 100644
--- a/Source/AppScaffolding/LibationScaffolding.cs
+++ b/Source/AppScaffolding/LibationScaffolding.cs
@@ -408,10 +408,6 @@ namespace AppScaffolding
 
         public static void migrate_to_v11_5_0(Configuration config)
         {
-            var writeToPath = "Serilog.WriteTo";
-
-			//QuickFilters.FilterState? inMemoryState;
-
             // Read file, but convert old format to new (with Name field) as necessary.
             if (!File.Exists(QuickFilters.JsonFile))
             {
@@ -448,7 +444,7 @@ namespace AppScaffolding
                 }
                 Debug.Assert(false, "Should not get here, QuickFilters.json deserialization issue");
             }
-            catch (Exception ex)
+            catch
             {
 				// Eat
             }
diff --git a/Source/LibationFileManager/QuickFilters.cs b/Source/LibationFileManager/QuickFilters.cs
index 1964c602..97500c25 100644
--- a/Source/LibationFileManager/QuickFilters.cs
+++ b/Source/LibationFileManager/QuickFilters.cs
@@ -29,8 +29,8 @@ namespace LibationFileManager
         public static string JsonFile => Path.Combine(Configuration.Instance.LibationFiles, "QuickFilters.json");
 
 
-		// load json into memory. if file doesn't exist, nothing to do. save() will create if needed
-		public static FilterState InMemoryState { get; set; }
+        // load json into memory. if file doesn't exist, nothing to do. save() will create if needed
+        public static FilterState InMemoryState { get; set; } = null!;
 
         public static bool UseDefault
         {
@@ -55,16 +55,19 @@ namespace LibationFileManager
         public record NamedFilter(string Filter, string Name)
         {
             public string Filter { get; set; } = Filter;
-            public string Name { get; set; } = Name;
+            public string? Name { get; set; } = Name;
         }
 
         public static IEnumerable<NamedFilter> Filters => InMemoryState.Filters.AsReadOnly();
 
         public static void Add(NamedFilter namedFilter)
         {
+            if (namedFilter == null) 
+                throw new ArgumentNullException(nameof(namedFilter));
+
             if (string.IsNullOrWhiteSpace(namedFilter.Filter))
                 return;
-            namedFilter.Filter = namedFilter.Filter?.Trim() ?? null;
+            namedFilter.Filter = namedFilter.Filter?.Trim() ?? string.Empty;
             namedFilter.Name = namedFilter.Name?.Trim() ?? null;
 
             lock (locker)