the only plugin i have is spriter in C2 ... that really weird i would make sure your pc it uptodate and you have the latest sevice packs and such also has your first post is kind of confusing are you using visual studio on windows 7 or 8
it look like something is not right with your visual studio check for updates
if you upload you exported blank project that your trying that's not working ill run it and see if its visual studio or C2