Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport/report.py", line 197, in _run_hook
    symb['add_info'](report, ui)
  File "/usr/share/apport/package-hooks/source_banshee.py", line 38, in add_info
    report['GConfNonDefault'] = mask_values(report['GConfNonDefault'])
  File "/usr/lib/python3.4/collections/__init__.py", line 908, in __getitem__
    raise KeyError(key)
KeyError: 'GConfNonDefault'