how do i fix this error

[Benj]

Database error in vBulletin 3.0.0 Beta 4:

Invalid SQL:
SELECT forum.forumid, lastpost, lastposter, lastthread, lastthreadid, lasticonid, threadcount, replycount
FROM forum AS forum

mysql error: Unknown column 'lastthread' in 'field list'

mysql error number: 1054



dam forum

[nexialys]

it's a dam forum, or a dam hack you installed ?!

check what hack you installed in that location, and also, where this errors occurs... we can't help with that low level of details...

BTW: upgrade your board... you don't even have a released version... RC and Betas have bugs... that's the goal of these versions...

[MindTrix]

Did you run all the querys that came with the hack you installed?

[peterska2]

Hacks were never meant to work with the Beta's. No hacks were permitted to be released on here before GAMMA.

Get your board updated to the latest version 3.0.3 and then install the hacks.

The database has changed quite a bit since the beta days and templates/codes are just completely different.

[Benj]

fixed chears

[xitrum]

I have the exact error!
All of the sudden this is happening. For some reasons, there are 3 columns missing in the forum table! If I restore the database from a backup 1 week ago then the forum is working fine. I wonder if this is the work of some hacker? I have some music forum with HTML allowed...
Forgot to mention: I am running 3.0.3 with only the Arcade hack .