Mnemosyne crashes on startup

[Gregory Dolan]

When I start Mnemosyne on Linux it crashes and says this:

An unexpected error has occurred.
Please forward the following info to the developers:

Traceback (innermost last):
  File "/usr/bin/mnemosyne", line 247, in <module>
    debug_file=options.debug_file)
  File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/__init__.py", line 212, in initialise
    self.load_database(filename)
  File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/__init__.py", line 338, in load_database
    self.database().load(path)
  File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/databases/SQLite.py", line 365, in load
    self.create_media_dir_if_needed()
  File "/usr/lib/python3.6/site-packages/mnemosyne/libmnemosyne/databases/SQLite_media.py", line 42, in create_media_dir_if_needed
    except WindowsError:
 NameError: name 'WindowsError' is not defined

[Peter Bienstman (peter-bienstman)]

In line 42 in SQLite_media.py, please replace WindowsError by OSError.