gistfile1.pytb

Traceback (most recent call last):
  File "./picard/ui/itemviews.py", line 491, in dropEvent
    self.drop_urls(urls, target)
  File "./picard/ui/itemviews.py", line 477, in drop_urls
    self.tagger.add_files(files)
  File "./picard/tagger.py", line 316, in add_files
    self.unmatched_files.add_files(new_files)
  File "./picard/cluster.py", line 254, in add_files
    super(UnmatchedFiles, self).add_files(files)
  File "./picard/cluster.py", line 56, in add_files
    file.update(signal=False)
  File "./picard/file.py", line 362, in update
    new_filename = self._make_filename(self.filename, self.metadata, self.tagger.config.setting)
  File "./picard/file.py", line 228, in _make_filename
    new_filename = self._script_to_filename(format, metadata, settings)
  File "./picard/file.py", line 200, in _script_to_filename
    filename = ScriptParser().eval(format, metadata, self)
  File "./picard/script.py", line 237, in eval
    return ScriptParser._cache[key].eval(self)
  File "./picard/script.py", line 80, in eval
    result.append(item.eval(state))
  File "./picard/script.py", line 70, in eval
    return function(parser, *args)
  File "./picard/script.py", line 251, in func_if
    if args[0].eval(parser):
  File "./picard/script.py", line 80, in eval
    result.append(item.eval(state))
  File "./picard/script.py", line 67, in eval
    args = [arg.eval(parser) for arg in self.args]
  File "./picard/script.py", line 80, in eval
    result.append(item.eval(state))
  File "./picard/script.py", line 70, in eval
    return function(parser, *args)
  File "./picard/script.py", line 464, in func_matchedtracks
    return str(parser.file.parent.album.get_num_matched_tracks())
AttributeError: 'UnmatchedFiles' object has no attribute 'album'