Online.php de Database Error ?

Database error in vBulletin 3.7.0 Beta 4:

Invalid SQL:

			SELECT userid, username, IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid
			FROM user AS user
			WHERE userid IN (0,);

MySQL Error   : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 3
Error Number  : 1064
Date          : Thursday, April 10th 2008 @ 11:17:24 PM
Script        : http://www.hit-club.org/online.php
Referrer      : http://www.hit-club.org/
IP Address    : 78.164.177.114
Username      : erkanertekin
Classname     : vb_database
MySQL Version : 4.1.20