If you have no feedback groups set and within the manage feedbacks admin page you happen to click the "next page" button you will get an sql error rather than being redirected to the feedback groups page like the "Prev Page" button does.
Code:
Database error in vBulletin 4.2.2:
Invalid SQL:
SELECT feedbackid, active FROM dbtech_classifieds_feedback;
MySQL Error : Unknown column 'active' in 'field list'
Error Number : 1054
Request Date : Tuesday, November 5th 2013 @ 09:24:52 PM
Error Date : Tuesday, November 5th 2013 @ 09:24:52 PM
Script : http://beta.300zx.co.uk/forums/admincp/classifieds.php?do=feedbacks
Referrer : http://beta.300zx.co.uk/forums/admincp/classifieds.php?do=feedbacks
IP Address : 80.255.208.82
Username : JaiKai
Classname : vB_Database
MySQL Version : 5.0.95-community