title: unable to write output file ... pdb visual studio 2010
body: <p>From other answers to this same question, it seems that this error is secondary to the real problem which is a missing source file. I am not using any source control. I have looked through my entire project and don't see any files with a warning icon, indicating it's missing. If there IS a file missing, what is it missing from?</p>
  
  <p>How can I find the "missing" file? Isn't there any way of resetting this? My whole project is stuck on this. </p>