Comment 10 for bug 319002

I made another try but this time with an mpeg file. If I right trim the video I have the following output if I launch pitivi from command line with --gst-debug-level=1 and the "Render Project" function seems not to start to record (but no error appears):

/usr/lib/pitivi/python/pitivi/playground.py:169: Warning: invalid uninstantiatable type `(null)' in cast to `GstMiniObject'
  self.current.set_state(gst.STATE_READY)

(pitivi:20247): GStreamer-CRITICAL **: gst_mini_object_unref: assertion `mini_object->refcount > 0' failed
('00:00:00.000', '00:07:42.280')

/usr/lib/pitivi/python/pitivi/bin.py:177: Warning: invalid uninstantiatable type `(null)' in cast to `GstMiniObject'
  if self.set_state(gst.STATE_READY) == gst.STATE_CHANGE_FAILURE:

(pitivi:20247): GStreamer-CRITICAL **: gst_mini_object_unref: assertion `mini_object->refcount > 0' failed