i get the error: Wrong type argument: number-char-or-marker-p, nil

the message is displayed, but with full headers (like after pressing `t'),
and like that:
,----
| Received: (qmail 29938 invoked from network); 6 Feb 2001 13:05:14 -0000
| User-Agent: Microsoft-Entourage/9.0.2509
| 
| Subject: USB -> serial a LoclTalk
| From: Jaromir <jaromir@livenet.pl>
`----
with an empty line instead of the `date:' line, which should be there.
the pic: http://phoner.blah.pl/Gnus/gnus-broken-msg.gif

hm. what is so special in: "Date: Sat, 23 Jan 1904 19:35:34 +0100" that
makes gnus show errors?

oh. thought. i have:
 (setq gnus-article-date-lapsed-new-header 'head)
 (setq gnus-treat-date-english 'head)
 (setq gnus-treat-date-lapsed 'head)
 (setq gnus-treat-date-local 'head)

waiting for fix :)
 m.m.
-- 
 use gnus, not guns!