I have no idea how to even approach debugging this issue. I have a solution with four projects in it and all of a sudden it has stopped functioning properly.
When I open the solution and click on anything, it freezes up and it says that ‘Visual Studio is busy waiting for an internal operation to complete”. It gives the same message when I try to build the project, although it never actually opens the file or builds – I have to end the process in order to escape.
To troubleshoot this you could start visual studio in safemode, by running: devenv.exe /SafeMode. It loads only default settings and services. If it works then the culprit is something like an extension or a third party package.
You can also start Visual Studio with logging:
http://msdn.microsoft.com/en-us/library/ms241272.aspx
For a list of other command line switches you can use, like /ResetSettings, you can follow this link:
http://msdn.microsoft.com/en-us/library/xee0c8y7(v=vs.100).aspx