0.92 not splitting

[M McIlrath <mbm@alba.mit.edu>]

I upgraded from 0.38 to 0.92, and my splits stopped working.
Any ideas as to what's wrong?

This is with emacs-20.3.1 running against the infamous uwash server.

Mail comes into INBOX just fine and I can access the other mail files,
but mail never gets moved into them.

here's the (bad?) .gnus:

(require 'cl)
(require  'nnimap )
(setq gnus-secondary-select-methods 
      '((nnimap 
	 "mtl"
	 (nnimap-address "mtl.mit.edu")
	 (setq nnimap-split-inbox '("INBOX"))
	 (nnimap-list-pattern ("INBOX" ("/mail/folders/mbm/" .  "mail.*"))))))
	

(setq nnimap-split-rule
      '(("/mail/folders/mbm/mail.nnimap" "Nnimap Mailing List")
	...
	))