URGENT: SQL Error after backup restore

[Arkidas]

I just deleted my database to restore a backup. After restoring the backup I receive this error when trying to access the site. Note that all vBulletin PHP files are 3.7 files since I was planning on upgrading to 3.7. I'm quite sure that's not the problem though but you tell me.

Database error in vBulletin 3.6.8:

Invalid SQL:

                               SELECT forum.forumid, lastpost, lastposter, lastthread, lastthreadid, lasticonid, threadcount, replycount, lastpostid, lastprefixid

                               FROM forum AS forum;

MySQL Error   : Unknown column 'lastprefixid' in 'field list'
Error Number  : 1054