Problmea syntaxys

Hola gente de vbhispano , mi foro recien , me ha mandado un mensaje a mi mail con el siguiente error:

Código:

Database error in vBulletin 4.0.2:

Invalid SQL:

        SELECT thread.threadid, thread.title
            
        FROM predicad_thread AS thread
        
        WHERE forumid = 136
            AND visible = 1
            AND open <> 10
            
            
        AND lastpost > 
        ORDER BY lastpost
        LIMIT 1;

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 'ORDER BY lastpost
        LIMIT 1' at line 11
Error Number  : 1064
Request Date  : Saturday, March 20th 2010 @ 10:42:22 PM
Error Date    : Saturday, March 20th 2010 @ 10:42:22 PM
Script        : http://www.xxxxxxxxxxxxxx.net/showthread.php?t=406&goto=nextnewest
Referrer      : Tira una direccion live con la direccion del mail.
IP Address    : 190.xxxxxxxxxxxx
Username      : Pajarito
Classname     : vB_Database
MySQL Version : 5.0.89-community