rfc822.py date parsing problem

[Michael B Allen]

How can I zoom in on what's going on below?

$ archivemail -n ~/Maildir/.Lists.*
/home/miallen/Maildir/.Lists.CIFS: I would have archived 11 of 29
message(s) in 0.1 seconds
/home/miallen/Maildir/.Lists.Expat: I would have archived 113 of 116
message(s) in 0.3 seconds
/home/miallen/Maildir/.Lists.JCIFS: I would have archived 628 of 1796
message(s) in 4.2 seconds
/home/miallen/Maildir/.Lists.Jarapac: I would have archived 0 of 6
message(s) in 0.0 seconds
/home/miallen/Maildir/.Lists.Libmba: I would have archived 21 of 39
message(s) in 0.1 seconds
/home/miallen/Maildir/.Lists.Linux-UTF8: I would have archived 0 of 190
message(s) in 0.4 seconds
Traceback (most recent call last):
  File "/usr/bin/archivemail", line 968, in ?
    main()
  File "/usr/bin/archivemail", line 550, in main
    archive(mailbox_path)
  File "/usr/bin/archivemail", line 761, in archive
    _archive_dir(mailbox_name, final_archive_name, "maildir")
  File "/usr/bin/archivemail", line 877, in _archive_dir
    if should_archive(msg):
  File "/usr/bin/archivemail", line 674, in should_archive
    time_message = guess_delivery_time(message)
  File "/usr/bin/archivemail", line 613, in guess_delivery_time
    date = message.getdate(header)
  File "/usr/lib/python2.1/rfc822.py", line 362, in getdate
    return parsedate(data)
  File "/usr/lib/python2.1/rfc822.py", line 901, in parsedate
    t = parsedate_tz(data)
  File "/usr/lib/python2.1/rfc822.py", line 826, in parsedate_tz
    if data[0][-1] in (',', '.') or data[0].lower() in _daynames:
IndexError: list index out of range