[Mailman-Users] "incorrect padding" from senddigests

[Dwight Ernest]

I just got the first appearance of this error under MM 2.1.1:

Traceback (most recent call last):
   File "/var/mailman/cron/senddigests", line 94, in ?
     main()
   File "/var/mailman/cron/senddigests", line 86, in main
     mlist.send_digest_now()
   File "/var/mailman/Mailman/Digester.py", line 60, in send_digest_now
     ToDigest.send_digests(self, mboxfp)
   File "/var/mailman/Mailman/Handlers/ToDigest.py", line 123, in 
send_digests
     send_i18n_digests(mlist, mboxfp)
   File "/var/mailman/Mailman/Handlers/ToDigest.py", line 303, in 
send_i18n_digests
     print >> plainmsg, msg.get_payload(decode=1)
   File "/var/mailman/pythonlib/email/Message.py", line 189, in get_payload
     return Utils._bdecode(payload)
   File "/var/mailman/pythonlib/email/Utils.py", line 75, in _bdecode
     value = base64.decodestring(s)
   File "/usr/local/lib/python2.2/base64.py", line 44, in decodestring
     return binascii.a2b_base64(s)
binascii.Error: Incorrect padding

Can anyone help me to debug it? My knowledge of Python is limited; I 
wonder if anyone else has encountered this?

Thanks.