title: visual studio: unable to delete folder this function is not supported on this system
body: <p>Appparantly I'm the only one on the Internet experiencing this problem because I can find ZERO other reports of anyone else encountering it. Unfortunately I've been dealing with it for months and I don't know what else to do.</p>
  
  <p>sometimes when I attempt to delete a folder from visual studio 2010, I get the error </p>
  
  <blockquote>
    <p>unable to delete folder 'XXXX' this function is not supported on this
    system</p>
  </blockquote>
  
  <p>I can't delete it from the file system either unless I reboot the machine. Apparently there is a lock on it somewhere, but I can't find it. I tried to use Unlocker, but that doesn't work on Windows 7 x64 so I'm stuck.</p>
  
  <p>This happens most often with the App_Theme folder, though it happens with other folders as well.</p>
  
  <p>I would suspect it has something to do with source control (we are using sourcegear fortress), however I've encountered this error at home on my personal projects, and I don't use source control on that...</p>
  
  <p>so does anyone have any ideas? has <strong>anyone</strong> out there experienced this issue? please help, it's driving me quickly and certainly towards insanity.</p>