Handle exception in Icon to ImageSource conversion

Bloxstrap/Extensions/IconEx.cs

@@ -8,11 +8,28 @@ public static class IconEx
     {
         public static Icon GetSized(this Icon icon, int width, int height) => new(icon, new Size(width, height));
 
-        public static ImageSource GetImageSource(this Icon icon)
+        public static ImageSource GetImageSource(this Icon icon, bool handleException = true)
         {
             using MemoryStream stream = new();
             icon.Save(stream);
-            return BitmapFrame.Create(stream, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
+
+            if (handleException)
+            {
+                try
+                {
+                    return BitmapFrame.Create(stream, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
+                }
+                catch (Exception ex)
+                {
+                    App.Logger.WriteException("IconEx::GetImageSource", ex);
+                    Frontend.ShowMessageBox(String.Format(Strings.Dialog_IconLoadFailed, ex.Message));
+                    return BootstrapperIcon.IconBloxstrap.GetIcon().GetImageSource(false);
+                }
+            }
+            else
+            {
+                return BitmapFrame.Create(stream, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
+            }
         }
     }
 }

Bloxstrap/Resources/Strings.resx

@@ -1198,4 +1198,9 @@ Please manually delete Bloxstrap.exe from the install location or try restarting
   <data name="Bootstrapper.JsonManagerSaveFailed" xml:space="preserve">
     <value>Failed to save {0}: {1}</value>
   </data>
+  <data name="Dialog.IconLoadFailed" xml:space="preserve">
+    <value>The chosen bootstrapper icon could not be loaded.
+
+{0}</value>
+  </data>
 </root>