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[Launchpad Bug Tracker <1547964@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:openlp/2.4

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https://bugs.launchpad.net/bugs/1547964

Title:
  Escaping video twice results in traceback

Status in OpenLP:
  Fix Committed
Status in OpenLP 2.4 series:
  Fix Committed

Bug description:
  If video clip is blanked with escape item and escape item is triggered
  again the next traceback appears:

  Traceback (most recent call last):
    File "E:\bzr\openlp\refix-win-display\openlp\core\ui\slidecontroller.py", line 516, in live_escape
      self.media_controller.media_stop(self)
    File "E:\bzr\openlp\refix-win-display\openlp\core\ui\media\mediacontroller.py", line 661, in media_stop
      self.current_media_players[controller.controller_type].stop(display)
    File "E:\bzr\openlp\refix-win-display\openlp\core\ui\media\systemplayer.py", line 181, in stop
      display.media_player.durationChanged.disconnect()
  TypeError: disconnect() failed between 'durationChanged' and all its connections

  Win 8.1 / 2.4 / System mediaplayer

  Edit: This only happens when System media player has the highest
  priority/is the only enabled player.

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