[AMG021]

Database error in vBulletin 4.0.1:

Invalid SQL:

                SELECT forum.forumid, forum.lastpost, forum.lastposter, forum.lastposterid, forum.lastthread, forum.lastthreadid, forum.lasticonid, forum.threadcount, forum.replycount, forum.lastpostid, forum.lastprefixid, default_tags_ids, user.usergroupid, user.homepage, user.options AS useroptions, IF(userlist.friend = 'yes', 1, 0) AS isfriend
                    
                FROM forum AS forum
                
                LEFT JOIN user AS user ON (user.userid = forum.lastposterid)
                LEFT JOIN userlist AS userlist ON (userlist.relationid = user.userid AND userlist.type = 'buddy' AND userlist.userid = 1);

MySQL Error   : Unknown column 'default_tags_ids' in 'field list'
Error Number  : 1054
Request Date  : Wednesday, February 10th 2010 @ 08:32:42 AM
Error Date    : Wednesday, February 10th 2010 @ 08:32:42 AM
Script        : http://www..com/forum.php
Referrer      : http://www..com/newthread.php?do=newthread&f=11
IP Address    : 24.198.89.877
Username      : mikey
Classname     : vB_Database
MySQL Version : 5.0.51a-log

getting this error please help