--- a/InspectorView.st	Mon Apr 16 05:57:26 2018 +0200
+++ b/InspectorView.st	Mon Apr 16 08:41:16 2018 +0200
@@ -3768,7 +3768,7 @@
         ^ #()
     ].
     ^ [object inspectorExtraAttributes]
-                on: MessageNotUnderstood
+                on: (Error,MessageNotUnderstood)
                 do: [:ex | ex return: #() ]
 
     "Created: / 17-07-2006 / 11:02:32 / cg"