When trying to edit any webpart and then selecting the Modify Shared Web Part from the menu on any SharePoint site would give the following error:-
An unexpected error has occurred
All the permissions are correct.
Title
Error “An unexpected error has occurred”Description
Resolution
WORKAROUND:
None
STATUS:
Issue fixed in version 5.0. The latest version of Quest Web Parts for SharePoint can be downloaded at: http://support.quest.com/support_download/Downloads.asp