logilab-common #6760 maboa crashes on unknown encoding [resolved]

On maboa-htmlize I get the following

while processing XXXX.mdir
Traceback (most recent call last):
  File "/usr/bin/maboa-htmlize", line 22, in <module>
    run(mbox,target_dir)
  File "/usr/bin/maboa-htmlize", line 10, in run
    proc.process_mailbox(mbox)
  File "/usr/lib/python2.5/site-packages/maboa/htmlize.py", line 195, in process_mailbox
    for dir_name, msg_filename, html, attachments in self._iterate_mailbox(mbox, indexer):
  File "/usr/lib/python2.5/site-packages/maboa/htmlize.py", line 155, in _iterate_mailbox
    msg_dict = self._msg_to_dict(message)
  File "/usr/lib/python2.5/site-packages/maboa/htmlize.py", line 105, in _msg_to_dict
    dico['from'] = mangle_addr(message.get('From',''))
  File "/usr/lib/python2.5/site-packages/logilab/common/umessage.py", line 52, in get
    return decode_QP(value)
  File "/usr/lib/python2.5/site-packages/logilab/common/umessage.py", line 24, in decode_QP
    parts.append(unicode(decoded, charset, 'replace'))
LookupError: unknown encoding:
priorityimportant
typebug
done in0.39.1
load1.000
load left0.000
closed by<not specified>