Traceback (most recent call last):
  File "/usr/bin/hp-pkservice", line 104, in <module>
    BackendService().run(pkit_version)
  File "/usr/share/hplip/base/pkit.py", line 210, in __init__
    self.loop = gobject.MainLoop()
AttributeError: 'module' object has no attribute 'MainLoop'