python2.7 bug startup ''playonlinux'' , python2.6 working

[segora]

Traceback (most recent call last):
  File "/usr/share/playonlinux/python/message_one.py", line 32, in <module>
    lib.lng.Lang()
  File "/usr/share/playonlinux/python/lib/lng.py", line 19, in __init__
    mytranslation = gettext.translation(domain, localedir, [mylocale.GetCanonicalName()], fallback = True)
  File "/usr/lib/python2.7/gettext.py", line 480, in translation
    mofiles = find(domain, localedir, languages, all=1)
  File "/usr/lib/python2.7/gettext.py", line 437, in find
    for nelang in _expand_lang(lang):
  File "/usr/lib/python2.7/gettext.py", line 132, in _expand_lang
    locale = normalize(locale)
  File "/usr/lib/python2.7/locale.py", line 358, in normalize
    fullname = localename.translate(_ascii_lower_map)
TypeError: character mapping must return integer, None or unicode