database error!

[desperado2]

Database error in vBulletin 3.7.2:

Invalid SQL:

        SELECT *
        FROM threadrate
        WHERE userid = 1
            AND threadid =;

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 4
Error Number  : 1064
Request Date  : Thursday, August 21st 2008 @ 03:15:12 AM
Error Date    : Thursday, August 21st 2008 @ 03:15:12 AM
Script        : http://www.sitename.com/showthread.php?t=25334
Referrer      : 
IP Address    : ipadres
Username      : username
Classname     : vB_Database
MySQL Version : 4.1.22-standard