Gnus html again

[Roger Mason]

Hi,

First thanks to those who replied to my previous posting (Gnus &
html).  That request for help was stimulated by the following error
(in the minibuffer) on trying to open some messages:

Wrong type argument: number-or-marker-p, nil

The following is the header information of a message that produces the
error:

From: "Maureen Moore" <mmoore@esd.mun.ca>
To: <mmoore@esd.mun.ca>
Subject: Notification of Upcoming Seminar
Date: Wed, 1 Oct 2003 14:52:57 -0230
X-Gnus-Mail-Source: file:/var/spool/mail/rmason
Message-ID: <002201c38840$acddd710$be249986@department.esd.mun.ca>
MIME-Version: 1.0
Content-Type: multipart/mixed;
        boundary="----=_NextPart_000_0023_01C3882B.B872D310"
X-Priority: 3 (Normal)
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook, Build 10.0.4510
Importance: Normal
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
X-Spam-Status: No, hits=-7.9 required=5.0
        tests=FROM_AND_TO_SAME_5,SPAM_PHRASE_00_01,USER_IN_WHITELIST    
version=2.43
Lines: 547

I have no clue what is going on here and therefore no idea of the fix.

Can anyone help?

Thanks for your patience.

Roger Mason