having problems with admin

[concept]

i been having problems with my vbb admin section when i chaneg something on user section notign works i try to save the changes and i get this error::

PHP Code:

Database error in vBulletin Control Panel 2.2.5:

Invalid SQL: SELECT userid
                    FROM user
                    WHERE username='Dragin_X'
                        AND userid <> 
mysql error: You have an error in your SQL syntax near '' at line 4

mysql error number: 1064

Date: Saturday 03rd of August 2002 11:28:32 PM
Script: [url]http://www.halocraft.com/visuallyinfected/visuallyinfected/admin/user.php[/url]
Referer: [url]http://www.halocraft.com/visuallyinfected/admin/user.php?action=edit&userid=77[/url] 


can anyone tell me where to look to find the problem and fix it??