Database Error 3 7 x

Database error in vBulletin 3.7.4:

Invalid SQL:

UPDATE;

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 1
Error Number  : 1064
Request Date  : Tuesday, February 24th 2009 @ 08:05:30 PM
Error Date    : Tuesday, February 24th 2009 @ 08:05:31 PM
Script        : http://www.xxxx.org/admincp/user.php?do=update
Referrer      : http://www.xxx.org/admincp/user.php?do=edit&u=5010
IP Address    : 88.242.xxx.xxx
Username      : xxxxxx
Classname     : vB_Database
MySQL Version : 5.0.67-community