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[Tim Bentley <1518634@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:~trb143/openlp/bug-1518634-22

** Branch linked: lp:~trb143/openlp/bug-1518634

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https://bugs.launchpad.net/bugs/1518634

Title:
  Saved Service with Unavailable player crashes

Status in OpenLP:
  In Progress
Status in OpenLP 2.2 series:
  In Progress

Bug description:
  
  ubuntu 14.04
  openlp 2.2.1

  Create a service under windows:

  [{"openlp_core": {"lite-service": false, "service-theme": ""}},
  {"serviceitem": {"header": {"background_audio": [], "notes": "",
  "end_time": 0, "theme": null, "processor": "Powerpoint", "name":
  "presentations", "icon": ":/plugins/plugin_presentations.png",
  "auto_play_slides_loop": false, "type": 3, "start_time": 0,
  "from_plugin": false, "timed_slide_interval": 0, "search": "",
  "capabilities": [17, 10, 19, 20, 21], "plugin": "presentations",
  "data": "", "title": "xxx.ppt", "theme_overwritten": false,
  "auto_play_slides_once": false, "xml_version": null,
  "will_auto_start": false, "media_length": 0, "audit": "", "footer":
  []}......

  Open this service under ubuntu and start presentation xxx.ppt:

   --- Exception Traceback ---
  Traceback (most recent call last):
    File "/usr/share/openlp/openlp/plugins/presentations/lib/powerpointcontroller.py", line 149, in load_presentation
      self.controller.process.Presentations.Open(os.path.normpath(self.file_path), False, False, False)
  AttributeError: 'NoneType' object has no attribute 'Presentations'

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/usr/share/openlp/openlp/core/ui/servicemanager.py", line 1462, in on_make_live
      self.make_live()
    File "/usr/share/openlp/openlp/core/ui/servicemanager.py", line 1478, in make_live
      self.live_controller.add_service_manager_item(self.service_items[item]['service_item'], child)
    File "/usr/share/openlp/openlp/core/ui/slidecontroller.py", line 808, in add_service_manager_item
      self._process_item(item, slide_num)
    File "/usr/share/openlp/openlp/core/ui/slidecontroller.py", line 837, in _process_item
      '%s_start' % service_item.name.lower(), [self.service_item, self.is_live, self.hide_mode(), slide_no])
    File "/usr/share/openlp/openlp/core/common/registry.py", line 137, in execute
      result = function(*args, **kwargs)
    File "/usr/share/openlp/openlp/plugins/presentations/lib/messagelistener.py", line 358, in startup
      controller.add_handler(self.controllers[self.handler], file, hide_mode, message[3])
    File "/usr/share/openlp/openlp/plugins/presentations/lib/messagelistener.py", line 63, in add_handler
      if not self.doc.load_presentation():
    File "/usr/share/openlp/openlp/plugins/presentations/lib/powerpointcontroller.py", line 157, in load_presentation
      except (AttributeError, pywintypes.com_error) as e:
  NameError: name 'pywintypes' is not defined

  There isn't a good solution to use the service information about the
  processor directly. Please check first the existing presentation
  processors and give the user a information that openlp now use a
  another processor e. g. like Impress.

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