Hi, I have downloaded ArcGIS diagrammer for 10.1 and the setup wizard stated that it was sucessfully installed, but when I try to run it it comes up with an "Unhandled exception has occurred in your application......The type initializer for 'ESRI.ArcGIS.Diagrammer.DiagrammerEnvironment' threw an exception. Any ideas what I can do, I have tried to re-install, restart etc etc but its not working for me, cheers JO