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[Tim Bentley <1223644@xxxxxxxxxxxxxxxxxx>]

** Changed in: openlp/trunk
       Status: New => Won't Fix

** Changed in: openlp/2.0
       Status: New => Won't Fix

** Changed in: openlp/2.0
    Milestone: 2.0.4 => None

** Changed in: openlp/trunk
    Milestone: 2.1.1 => None

** Changed in: openlp
    Milestone: 2.1.1 => None

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https://bugs.launchpad.net/bugs/1223644

Title:
  OpenLP fails to start  if python-uno throws an exception

Status in OpenLP - Worship Presentation Software:
  New
Status in OpenLP 2.0 series:
  Won't Fix
Status in OpenLP trunk series:
  Won't Fix

Bug description:
  As of OpenLP 2.0.2, the startup code is unable to handle external
  errors which cause python-uno to throw exceptions.  In this particular
  instance,

  Current behavior:
  After running OpenLP with the option "-l debug", the following stack trace is logged:
   File "/usr/bin/openlp", line 44, in <module>
      main()
    File "/usr/share/openlp/openlp/core/__init__.py", line 342, in main
      sys.exit(app.run(qt_args))
    File "/usr/share/openlp/openlp/core/__init__.py", line 150, in run
      self.mainWindow = MainWindow(self)
    File "/usr/share/openlp/openlp/core/ui/mainwindow.py", line 685, in __init__
      self.pluginManager.find_plugins(plugin_path, self.pluginHelpers)
    File "/usr/share/openlp/openlp/core/lib/pluginmanager.py", line 121, in find_plugins
      plugin = p(plugin_helpers)
    File "/usr/share/openlp/openlp/plugins/custom/customplugin.py", line 54, in __init__
      self.manager = Manager(u'custom', init_schema)
    File "/usr/share/openlp/openlp/core/lib/db.py", line 229, in __init__
      self.session = init_schema(self.db_url)
    File "/usr/share/openlp/openlp/plugins/custom/lib/db.py", line 61, in init_schema
      session, metadata = init_db(url)
    File "/usr/share/openlp/openlp/core/lib/db.py", line 64, in init_db
      engine = create_engine(url, poolclass=NullPool)
    File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/__init__.py", line 321, in create_engine
      return strategy.create(*args, **kwargs)
    File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/strategies.py", line 64, in create
      dbapi = dialect_cls.dbapi(**dbapi_args)
    File "/usr/lib/python2.7/dist-packages/sqlalchemy/dialects/sqlite/pysqlite.py", line 276, in dbapi
      from pysqlite2 import dbapi2 as sqlite
    File "/usr/lib/python2.7/dist-packages/uno.py", line 334, in _uno_import
      "%s (or '%s.%s' is unknown)" % (py_import_exc, name, x)
  AttributeError: 'exceptions.ImportError' object has no attribute 'with_traceback'

  
  Expected behavior:
  OpenLP should provide the user with an error dialog before crashing with a message such as "OpenLP is unable to connect to the LibreOffice database".
  If it is reasonable, add workaround code to allow OpenLP to continue without using the plugin which triggered the external exception.

  Environment notes:
  OpenLP 2.0.2
  Ubuntu 12.04
  Libre Office 4.1.1

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