Code review comment for lp:~mandel/ubuntuone-windows-installer/auto-update-python-only

Unhandled error in Deferred:
Traceback (most recent call last):
  File "twisted\internet\defer.pyc", line 388, in errback

  File "twisted\internet\defer.pyc", line 455, in _startRunCallbacks

  File "twisted\internet\defer.pyc", line 542, in _runCallbacks

  File "twisted\internet\defer.pyc", line 1076, in gotResult

--- <exception caught here> ---
  File "twisted\internet\defer.pyc", line 1018, in _inlineCallbacks

  File "twisted\python\failure.pyc", line 349, in throwExceptionIntoGenerator

  File "ubuntuone_installer\gui\qt\main\windows.pyc", line 85, in check_credentials

  File "twisted\internet\defer.pyc", line 1020, in _inlineCallbacks

  File "ubuntuone_installer\gui\qt\main\windows.pyc", line 58, in success_cb

  File "ubuntuone_installer\gui\qt\main\windows.pyc", line 38, in stop

  File "twisted\internet\base.pyc", line 570, in stop

twisted.internet.error.ReactorNotRunning: Can't stop reactor that isn't running.