I\'ve seen this: VSTS 2010 SGEN : error : Could not load file or assembly (Exception from HRESULT: 0x80131515) and none of the answers work. It also doesn\'t appear when I b
Try adding your to C:\[Visual Studio 2010 Install Dir]\Common7\IDE\devenv.exe.config directly below and see if that helps :)
C:\[Visual Studio 2010 Install Dir]\Common7\IDE\devenv.exe.config