After upgrading our Team Foundation Server environment to 2010, we got the following error on the project dashboard web page on the TFS2010 project portal.
“Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type is not registered as safe.”
I tried a lot of things (reinstalling the WSP solution, adding the controls to the web.config file,…) before I found this simple solution:
After executing "Repair Connection" on all the Sharepoint Applications in the Team Foundation Server Administration Console, everything worked fine.