Traceback (most recent call last):
  File "/usr/bin/serpentine", line 197, in <module>
    app.add_files(options.open_files, sync=True)
  File "/usr/lib/python2.6/dist-packages/serpentine/operations.py", line 554, in wrapper
    return syncOperation(func(*args, **kwargs))
  File "/usr/lib/python2.6/dist-packages/serpentine/__init__.py", line 365, in add_files
    return self.music_list_gw.add_files (files)
  File "/usr/lib/python2.6/dist-packages/serpentine/mastering.py", line 619, in add_files
    for filename in filenames)
  File "/usr/lib/python2.6/dist-packages/serpentine/mastering.py", line 583, in add_hints
    pls = self._metadata.filter_location(hint["location"])
  File "/usr/lib/python2.6/dist-packages/serpentine/mastering.py", line 508, in filter_location
    metadata = loc_filter.filter_location(location)
  File "/usr/lib/python2.6/dist-packages/serpentine/plugins/plugfilter_k3b.py", line 57, in filter_location
    fd = gnomevfs.open(url.unparse())
InvalidURIError: Invalid URI