Description of problem:
Not sure, I was just tagging some mp3s

Version-Release number of selected component:
picard-1.0-1.fc17

Additional info:
cmdline:        /usr/bin/python /usr/bin/picard
executable:     /usr/bin/picard
kernel:         3.6.8-2.fc17.x86_64
uid:            1000

Truncated backtrace:
webservice.py:76:__getattr__:AttributeError: artist_credit

Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/picard/webservice.py", line 223, in _process_reply
    handler(xml_handler.document, reply, error)
  File "/usr/lib64/python2.7/site-packages/picard/cluster.py", line 183, in _lookup_finished
    matches.append((self._compare_to_release(release), release))
  File "/usr/lib64/python2.7/site-packages/picard/cluster.py", line 157, in _compare_to_release
    b = artist_credit_from_node(release.artist_credit[0], self.config)[0]
  File "/usr/lib64/python2.7/site-packages/picard/webservice.py", line 76, in __getattr__
    raise AttributeError, name
AttributeError: artist_credit

Local variables in innermost frame:
self: {'attribs': {u'score': u'1', u'id': u'eeaca806-9280-48c7-9981-d73d1be69fa7'}, 'text': u'', 'children': {u'status': [{'attribs': {}, 'text': u'Official', 'children': {}}], u'title': [{'attribs': {}, 'text': u'Lost Foundling Remix EP', 'children': {}}], u'country': [{'attribs': {}, 'text': u'GB', 'children': {}}], u'label_info_list': [{'attribs': {}, 'text': u'', 'children': {u'label_info': [{'attribs': {}, 'text': u'', 'children': {u'catalog_number': [{'attribs': {}, 'text': u'AP002EP', 'children': {}}], u'label': [{'attribs': {u'id': u'11b20c6c-5671-46ad-8411-15f11706eef4'}, 'text': u'', 'children': {u'name': [{'attribs': {}, 'text': u'Aperture', 'children': {}}]}}]}}]}}], u'medium_list': [{'attribs': {u'count': u'1'}, 'text': u'', 'children': {u'medium': [{'attribs': {}, 'text': u'', 'children': {u'track_list': [{'attribs': {u'count': u'4'}, 'text': u'', 'children': {}}], u'disc_list': [{'attribs': {u'count': u'0'}, 'text': u'', 'children': {}}], u'format': [{'attribs': {}, 'text': u'Vinyl', 'children': {}}]}}], u'track_count': [{'attribs': {}, 'text': u'4', 'children': {}}]}}], u'date': [{'attribs': {}, 'text': u'2010-03-22', 'children': {}}], u'text_representation': [{'attribs': {}, 'text': u'', 'children': {u'language': [{'attribs': {}, 'text': u'eng', 'children': {}}], u'script': [{'attribs': {}, 'text': u'Latn', 'children': {}}]}}], u'release_group': [{'attribs': {u'id': u'c07d79b0-2a18-43ee-b15a-08fe56a18ac2'}, 'text': u'', 'children': {u'secondary_type_list': [{'attribs': {}, 'text': u'', 'children': {u'secondary_type': [{'attribs': {}, 'text': u'Remix', 'children': {}}]}}]}}]}}
name: 'artist_credit'