[Michael.A]

when i try to view any user chat i get this

Database error in vBulletin 3.7.5:

Invalid SQL:

        SELECT COUNT(chatid) AS nbchats
        FROM mgc_cb_evo_chat AS c
        LEFT JOIN user AS fromu ON (c.fromuid=fromu.userid)
        LEFT JOIN user AS tou ON (c.touid=tou.userid)
        WHERE coidentifier IN ('0','me','announcement','ban','del','ignore','pm','slap') AND fromuid='3' AND isthreadwarning='0' AND ispostwarning='0'
        ORDER BY c.dateline DESC;

MySQL Error   : Unknown column 'isthreadwarning' in 'where clause'
Error Number  : 1054
Request Date  : Wednesday, February 18th 2009 @ 11:35:04 PM
Error Date    : Wednesday, February 18th 2009 @ 11:35:04 PM
Script        : http://my site.com/forum/mgc_cb_evo.php?do=search&what=userchats&u=3
Referrer      : http://my site.com/forum/forum.php
IP Address    : xxxxxxxxxxxxxxxx
Username      : xxxxxxxxxxxxxxx
Classname     : vB_Database
MySQL Version : 5.0.67-community

how can i fix this?
thank you..