Error 1146 after new thread is posted

[blitzburgh]

I get this database error everytime a post is made, but the thread posts anyway, and is just annoying. Has anyone seen this error and what it is from and how to fix it?

Thanks.

Database error in vBulletin 3.5.3:

Invalid SQL:
UPDATE session SET newposts = newposts+1 WHERE NOT ISNULL(newposts);

MySQL Error : Table 'clicklow_clicklow.session' doesn't exist
Error Number : 1146
Date : Sunday, February 19th 2006 @ 10:47:18 AM
Script : http://www.clicklowcoupons.com/newthread.php
Referrer : http://www.clicklowcoupons.com/newthread.php
IP Address :
Username :
Classname : vB_Database