mo2json: 7,24,25 remarked

$ python ~/opac/2011-12-30/mo2json.py
Traceback (most recent call last):
  File "/home/rdanilov/opac/2011-12-30/mo2json.py", line 28, in <module>
    print gettext_json('default', '/mnt/bjbrit01-wwwroot/GAMES-RD/Bjvvv/locale/', 'en_US.UTF8')
  File "/home/rdanilov/opac/2011-12-30/mo2json.py", line 8, in gettext_json
    tr = gettext.translation(domain, path, lang)
  File "/usr/lib/python2.6/gettext.py", line 469, in translation
    raise IOError(ENOENT, 'No translation file found for domain', domain)
IOError: [Errno 2] No translation file found for domain: 'default'