[Spambayes] Sb_imapfilter.py crashing again

[Woo, Christopher]

It was working beautifully for awhile, filtering spam without a hitch, and
all of a sudden, I've been getting this error (and a couple others) a lot:

Traceback (most recent call last):
  File "c:\spambayes\scripts\sb_imapfilter.py", line 1006, in ?
    run()
  File "c:\spambayes\scripts\sb_imapfilter.py", line 996, in run
    imap_filter.Filter()
  File "c:\spambayes\scripts\sb_imapfilter.py", line 865, in Filter
    self.unsure_folder)
  File "c:\spambayes\scripts\sb_imapfilter.py", line 780, in Filter
    msg.Save()
  File "c:\spambayes\scripts\sb_imapfilter.py", line 554, in Save
    raise BadIMAPResponseError("Cannot find saved message", "")
__main__.BadIMAPResponseError: The command 'Cannot find saved message'
failed to
 give an OK response.

Any suggestions?

CW