Traceback (most recent call last):
  File "/usr/bin/pitivi", line 125, in <module>
    _run_pitivi()
  File "/usr/bin/pitivi", line 113, in _run_pitivi
    import pitivi.application as ptv
  File "/usr/lib/pitivi/python/pitivi/application.py", line 49, in <module>
    from pitivi.ui.mainwindow import PitiviMainWindow
  File "/usr/lib/pitivi/python/pitivi/ui/mainwindow.py", line 38, in <module>
    from pitivi.ui.timeline import Timeline
  File "/usr/lib/pitivi/python/pitivi/ui/timeline.py", line 35, in <module>
    from timelinecanvas import TimelineCanvas
  File "/usr/lib/pitivi/python/pitivi/ui/timelinecanvas.py", line 28, in <module>
    from pitivi.ui.track import Track
  File "/usr/lib/pitivi/python/pitivi/ui/track.py", line 2, in <module>
    from pitivi.ui.trackobject import TrackObject
  File "/usr/lib/pitivi/python/pitivi/ui/trackobject.py", line 31, in <module>
    os.path.join(configure.get_pixmap_dir(), "trimbar-normal.png"))
GError: Impossibile riconoscere il formato di immagine per il file «/usr/share/pitivi/pixmaps/trimbar-normal.png»