I'm getting the below error when a report has an internal error. I can duplicate this error by trying to convert a bad date within a report. Instead of the viewer letting me know there's a bad date, it will throw an unhanded exception:
"Value cannot be null. Parameter name: window"
I have a Visual Studio 2010 WPF project using the WPF Viewer and I updated to Service Pack 1 for Crystal 2008 for VS2010 and I'm still having the issue.
I understand there's an issue with a report but if an end user gets this error, they will have no idea why.