I am running Visual Studio 2012 Update 1 against a TFS 2010 server. When certain combinations of builds are added to the "My Favorite Build Definitions" section of the Builds view of the Team Explorer, I get the message "An item with the same key has already been added". When this happens nothing in the view will update. "My Builds" and "My Favorite Build Definitions" just continue to show the last status they had before adding the new definition. Removing the last definition from favorites corrects the problem.I found this report "http://connect.microsoft.com/VisualStudio/feedback/details/778725/tfs-2012-agile-6-1-template-problem-an-item-with-the-same-key-has-already-been-added" that mentioned the same error message. It was supposedly fixed in U1 which I have but I tried clearing the cache as it suggested. Now when I launch VS the Builds view does not populate any sections. This means I can't even correct the problem because there are no builds in the favorites section.
Visual Studio/Team Foundation Server/.NET Framework Tooling Version
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Operating System Language