Traceback (most recent call last):
  File "/usr/lib/update-manager/check-new-release-gtk", line 183, in <module>
    cnr = CheckNewReleaseGtk(options)
  File "/usr/lib/update-manager/check-new-release-gtk", line 69, in __init__
    useProposed=options.proposed_release)
  File "/usr/lib/python2.7/dist-packages/UpdateManager/MetaReleaseGObject.py", line 50, in __init__
    MetaReleaseCore.__init__(self, useDevelopmentRelease, useProposed)
  File "/usr/lib/python2.7/dist-packages/UpdateManager/Core/MetaRelease.py", line 132, in __init__
    if not self._buildMetaReleaseFile():
  File "/usr/lib/python2.7/dist-packages/UpdateManager/Core/MetaRelease.py", line 155, in _buildMetaReleaseFile
    sys.stderr.write("mkdir() failed: '%s'" % e)
IOError: [Errno 2] No such file or directory