diff --git a/2017.Standard/FodyWeavers.xml b/2017.Standard/FodyWeavers.xml
index a5dcf04..6ef9a82 100644
--- a/2017.Standard/FodyWeavers.xml
+++ b/2017.Standard/FodyWeavers.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
-  <Costura />
+  <Costura CreateTemporaryAssemblies="true" />
 </Weavers>
\ No newline at end of file
diff --git a/2017/FodyWeavers.xml b/2017/FodyWeavers.xml
index a5dcf04..6ef9a82 100644
--- a/2017/FodyWeavers.xml
+++ b/2017/FodyWeavers.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
-  <Costura />
+  <Costura CreateTemporaryAssemblies="true" />
 </Weavers>
\ No newline at end of file
diff --git a/2019.Standard/FodyWeavers.xml b/2019.Standard/FodyWeavers.xml
index a5dcf04..6ef9a82 100644
--- a/2019.Standard/FodyWeavers.xml
+++ b/2019.Standard/FodyWeavers.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
-  <Costura />
+  <Costura CreateTemporaryAssemblies="true" />
 </Weavers>
\ No newline at end of file
diff --git a/2019/FodyWeavers.xml b/2019/FodyWeavers.xml
index a5dcf04..6ef9a82 100644
--- a/2019/FodyWeavers.xml
+++ b/2019/FodyWeavers.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
-  <Costura />
+  <Costura CreateTemporaryAssemblies="true" />
 </Weavers>
\ No newline at end of file
diff --git a/Shared/Models/VisualizerData.cs b/Shared/Models/VisualizerData.cs
index 7e69742..2f31051 100644
--- a/Shared/Models/VisualizerData.cs
+++ b/Shared/Models/VisualizerData.cs
@@ -22,6 +22,10 @@ public class VisualizerData {
         public bool CanSelectLexer { get; }
         public bool CanSelectParser { get; }
 
+        private static readonly string[] loadErrorExceptions = new[] {
+            "Microsoft.Xaml.Behaviors.Wpf"
+        };
+
         public VisualizerData(object o, Config config) {
             if (config is null) { throw new ArgumentNullException(nameof(config)); }
 
@@ -36,14 +40,17 @@ T createInstance<T>(string typename, object[] args = null) =>
                 types = AppDomain.CurrentDomain.GetAssemblies()
                     .Where(x => x != GetType().Assembly)
                     .SelectMany(x => {
-                        try {
-                            return x.GetTypes();
+                        var ret = Empty<Type>();
+                        if (!x.FullName.StartsWithAny(loadErrorExceptions)) {
+                            try {
+                                ret = x.GetTypes();
 #pragma warning disable CA1031 // Do not catch general exception types
-                        } catch {
+                            } catch {
 #pragma warning restore CA1031 // Do not catch general exception types
-                            AssemblyLoadErrors.Add(x.FullName);
-                            return Empty<Type>();
+                                AssemblyLoadErrors.Add(x.FullName);
+                            }
                         }
+                        return ret;
                     })
                     .Where(x => !x.IsAbstract)
                     .ToArray();
diff --git a/Shared/Util/Extensions/String.cs b/Shared/Util/Extensions/String.cs
index 96afa8c..41c5ff2 100644
--- a/Shared/Util/Extensions/String.cs
+++ b/Shared/Util/Extensions/String.cs
@@ -42,5 +42,6 @@ public static string ToCSharpLiteral(this string input, bool withQuotationMarks
         }
 
         public static bool ContainsAny(this string s, params string[] testStrings) => testStrings.Any(x => s.Contains(x));
+        public static bool StartsWithAny(this string s, params string[] testStrings) => testStrings.Any(x => s.StartsWith(x, StringComparison.InvariantCulture));
     }
 }
diff --git a/Shared/ViewModels/VisualizerDataViewModel.cs b/Shared/ViewModels/VisualizerDataViewModel.cs
index c041b0e..0ca3beb 100644
--- a/Shared/ViewModels/VisualizerDataViewModel.cs
+++ b/Shared/ViewModels/VisualizerDataViewModel.cs
@@ -118,7 +118,7 @@ public RelayCommand ChangeSelection {
                 if (changeSelection == null) {
                     changeSelection = new RelayCommand(sender => {
                         updateSelection(sender);
-                        var firstSelected = Tokens.FirstOrDefault(x => x.IsSelected);
+                        var firstSelected = Tokens?.FirstOrDefault(x => x.IsSelected);
                         if (TokensGrid is null || firstSelected is null) { return; }
                         TokensGrid.ScrollIntoView(firstSelected);
                     });