title: Visual Studio Solution freezes when I try to compile
body: <p>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.</p>
  
  <p>When I open the solution and click on anything, it freezes up and it says that <strong>'Visual Studio is busy waiting for an internal operation to complete"</strong>.  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.</p>