the application for project is not installed
I'm opening a solution that was apparently built on Visual Studio 2003 (not sure, I don't know anything about it) and trying to migrate to 2010. When trying to migrate I get the message: the application for project '' is not installed make sure the application for the project type (.csproj) is installed. If I open each one of the single projects of the solution they migrate fine but not the solution itself. If your projects individually migrate fine, then create a new blank visual studio 2010 solution, and add new projects individually (right click on solution->add->existing project) But I'm