[Disasterpiece]

for starters, you could change your text layout back to left-align, reading this all centered is a pain.

The database error looks like parts of the database structure are missing.

Did you restore an old backup from a different vbulletin version?
You could try to uncomment the line: (remove the //)

PHP Code:

define("DISABLE_HOOKS",1); 


in your config.php file located in /includes/config.php
and see if this helps, but judging from the error, this doesn't seem like a plugin issue, rather than a malformed database structure.

Could you give details what you did exactly to roll back your forum to an older revision?