C++ complilation problems in VS2010 Beta 1

Well, I've recently installed VS2010 and I'm having a problem with simple C++ applications compilation. If I create a project that's named WW and I compile it and ever开发者_JS百科ything works fine, then If I opened an old project, and try to compile it, VS will compile WW!

Other times, I try to debug the application and it refueses to do so. The green debug button gets disabled.

Can you solve that?

Did you inadvertently open the old project into your current solution that includes WW as the default project?