[Mailman-Users] Uncaught runner exception: 'str' object has no attribute 'get_sender'

[Kake L Pugh]

Through my own stupidity, my qrunner was not running for a while (I
forgot about an apt-get upgrade in progress).  The messages that got
sent to my lists during this time seem to be sitting in
  /var/lib/mailman/qfiles/shunt/

I cd'ed to /var/lib/mailman/ and ran python /usr/lib/mailman/bin/unshunt
The files didn't move and this appeared in /var/log/mailman/error:

  Sep 20 19:22:03 2004 (19811) SHUNTING: 1095701745.163589+5859351f96c94b240f564b24ad2dabc07d4b1c4b
  Sep 20 19:22:03 2004 (19811) Uncaught runner exception: 'str' object has no attribute 'get_sender'
  Sep 20 19:22:03 2004 (19811) Traceback (most recent call last):
    File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 111, in _oneloop
      self._onefile(msg, msgdata)
    File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 159, in _onefile
      sender = msg.get_sender()
  AttributeError: 'str' object has no attribute 'get_sender'

(several times over with different strings after "SHUNTING: ").

Mailman version is 2.1.5, 'python -V' says 'Python 2.3.4', OS is
'Debian Linux 3.1'.

I googled for "Uncaught runner exception: 'str' object has no
attribute 'get_sender'" and got
  http://www.mail-archive.com/mailman-users@python.org/msg26744.html
which seems to have no followups and
  http://mail.python.org/pipermail/mailman-users/2004-June/037126.html
which ended up with the original poster saying that his problem went
away all by itself.

I read
  http://www.python.org/cgi-bin/faqw-mm.py?req=all#1.23
and nearly decided that I couldn't face posting my question but
figured the worst you could all do is ignore me.  Happy to provide any
further details that will actually help in solving the problem though.

Kake