abrt 1.0.0 detected a crash.

backtrace
-----
Summary: TBe107c52d playback.py:329:seek_to:TypeError: unsupported operand type(s) for *: 'float' and 'NoneType'

Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/miro/frontends/widgets/gtk/customcontrols.py", line 98, in do_button_press_event
    self.move_slider_to_mouse(event.x, event.y)
  File "/usr/lib/python2.6/site-packages/miro/frontends/widgets/gtk/customcontrols.py", line 125, in move_slider_to_mouse
    wrappermap.wrapper(self).emit('moved', self.get_value())
  File "/usr/lib/python2.6/site-packages/miro/signals.py", line 155, in emit
    if callback.invoke(self, args):
  File "/usr/lib/python2.6/site-packages/miro/signals.py", line 76, in invoke
    return self.func(obj, *(args + self.extra_args))
  File "/usr/lib/python2.6/site-packages/miro/frontends/widgets/videobox.py", line 370, in on_slider_moved
    app.playback_manager.seek_to(new_time)
  File "/usr/lib/python2.6/site-packages/miro/frontends/widgets/playback.py", line 329, in seek_to
    self.emit('playback-did-progress', progress * total, total)
TypeError: unsupported operand type(s) for *: 'float' and 'NoneType'

Local variables in innermost frame:
progress: 0.162698412698
self: <miro.frontends.widgets.playback.PlaybackManager object at 0x9f3382c>
total: None

cmdline: /usr/bin/python /usr/bin/miro.real 
component: Miro
executable: /usr/bin/miro.real
kernel: 2.6.31.6-145.fc12.i686
package: Miro-2.5.2-6.fc12
uuid: e107c52d