title: Why compile button is disabled in VisualStudio?
body: <p>For some reason when I open my project Compile button is disabled. I'm in C++ file and Ctrl+F7 doesn't work, Menu/Build/Compile is disabled and Compile in context menu in SolutionExplorer is disabled too. I can build project with F7, but I can't compile single file. It used to work just fine.</p>
  
  <p>Any ideas why? </p>