The Linq to SQL designer is broken in my installation of VS 2008, whenever i try to open a dbml file i get a message box saying "The operation could not be completed" (Very usefull error!) Ive been working on a VS addin which uses linq, everything was working fine yesterday but when i tried to open the project today it wouldnt compile because of the following error Error 1 Build failed due to validation errors in [...]IssueTrackerDataContext.dbml. Open the file and resolve the issues in the Error
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