GrooveWalrus error(2)

Traceback (most recent call last):
  File "./gw.py", line 1741, in OnPlayListPlayClick
    self.PlaySong(val, True)
  File "./gw.py", line 1854, in PlaySong
    cs.CheckId(cs.song_id)
  File "./gw.py", line 2987, in CheckId
    query_results = tinysong.Tsong().get_search_results(query_string, 32)
  File "/home/huon/GrooveWalrusSource/gw/main_utils/tinysong.py", line 78, in get_search_results
    results_array = json.loads(raw_results)
  File "/usr/lib/python2.6/json/__init__.py", line 307, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.6/json/decoder.py", line 319, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.6/json/decoder.py", line 338, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded