Why am I unable to add an existing project to my solution in Visual Studio 2008?

Posted by willem on Super User See other posts from Super User or by willem
Published on 2010-03-04T15:20:48Z Indexed on 2010/03/30 22:33 UTC
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visual-studio-2008-sp1

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windows-7

I am unable to add an existing project or an existing item to any project or solution in visual studio 2008 (SP1). I only get an "Operation cannot be completed error".

Any ideas?

Things I have tried that did not work:

ran devenv /resetsettings (no luck)
Un-installed Resharper 4.5. (no luck)
Repaired Visual Studio from Add/Remove Programs. (no luck)
Un-installed AnkhSVN. (no luck)

Note I am using Windows 7.

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