title: Attempt to sign iOS app fails with error 'Bad File Descriptor'
body: <p>I attempted a process I've done successfully several times. I Archive my app. The Organizer pops up. I click on "Distribute", select the identity I want to sign with and click "Export". Normally I then select where I want to save my Archive but instead I get an error "The operation couldn't be completed. Bad file descriptor."</p>
  
  <p>I've done my research here on stackoverflow (<a href="https://stackoverflow.com/questions/8423575/submitting-a-mac-app-fails-with-bad-file-descriptor">Submitting a Mac App fails with &#39;Bad File Descriptor&#39;</a>) and other forums and everyone suggests that X-Code itself is corrupted and that I should execute a few terminal commands to install the components I need, or that I should re-install X-Code itself. However, since I downloaded X-Code as a complete package directly from the app store the former is not an option, and I've tried re-installing X-Code about 5 times now.</p>