Error when trying to add a product

[flfooty tv]

Database error in vBulletin 3.6.1:

Invalid SQL:
ALTER TABLE `event` ADD `lv_vb_eventforums_threadid` INT;

MySQL Error : Duplicate column name 'lv_vb_eventforums_threadid'
Error Number : 1060
Date : Thursday, September 21st 2006 @ 10:17:10 AM
Script : http://www.freelivetv.co.uk/sport/**...=productimport
Referrer : http://www.freelivetv.co.uk/sport/**...?do=productadd
IP Address : *********
Username : *******
Classname : vb_database



i have put * where info i dont want you to see

anyway why would i get this?