Database Error Installing mod

[A Dead Puppie]

I'm trying to install a mod, (Point Market 3) and i keep getting a database error with the following:

Database error in vBulletin 4.2.2:

Invalid SQL:
ALTER TABLE user ADD market_points DECIMAL( 18, 3 ) NOT NULL DEFAULT '1.000';

MySQL Error   : Duplicate column name 'market_points'
Error Number  : 1060
Request Date  : Tuesday, May 13th 2014 @ 08:35:46 PM
Error Date    : Tuesday, May 13th 2014 @ 08:35:46 PM
Script        : http://machinimaevolved.net/admincp/plugin.php?do=productimport
Referrer      : http://machinimaevolved.net/admincp/plugin.php?do=productadd
IP Address    : 24.211.210.104
Username      : dudemanpeace
Classname     : vB_Database
MySQL Version : 5.5.36-cll

I've tried removing the tables and it keeps giving me this