I am having trouble with ArcGIS Diagrammer 10.1 because I get an error message [Microsoft.NET Framework] after the wizard states it was a sucessful installation about an 'Unexpected exception has occured in your application......the type initialzer for ESRI.ArcGIS.Diagrammer.DiagrammerEnvironment threw an exception' I have an option to continue or quit but the continue does not work for me. The diagrammer window is blank. Cheers jo