pitivi don't start

[foxyolegus]

foxyolegus@foxyolegus-N61Vg:~$ pitivi
Traceback (most recent call last):
  File "/usr/bin/pitivi", line 125, in <module>
    _run_pitivi()
  File "/usr/bin/pitivi", line 120, in _run_pitivi
    sys.exit(ptv.main(sys.argv))
  File "/usr/lib/pitivi/python/pitivi/application.py", line 514, in main
    ptv = StartupWizardGuiPitivi(debug=options.debug)
  File "/usr/lib/pitivi/python/pitivi/application.py", line 371, in __init__
    FullGuiPitivi.__init__(self, debug)
  File "/usr/lib/pitivi/python/pitivi/application.py", line 264, in __init__
    InteractivePitivi.__init__(self, debug)
  File "/usr/lib/pitivi/python/pitivi/application.py", line 212, in __init__
    Pitivi.__init__(self)
  File "/usr/lib/pitivi/python/pitivi/application.py", line 128, in __init__
    self.effects = EffectsHandler()
  File "/usr/lib/pitivi/python/pitivi/effects.py", line 123, in __init__
    self._setAllEffects()
  File "/usr/lib/pitivi/python/pitivi/effects.py", line 141, in _setAllEffects
    added = self.addStreams(element_factory, effect)
  File "/usr/lib/pitivi/python/pitivi/effects.py", line 192, in addStreams
    stream = get_stream_for_pad(pad)
  File "/usr/lib/pitivi/python/pitivi/stream.py", line 373, in get_stream_for_pad
    stream.pad_id = pad_id
AttributeError: 'NoneType' object has no attribute 'pad_id'

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.