Problems with upgrade
 

Hello everyone,

I recently bought 4.0 suite and want to upgrade mine old forums to 4 version from 3.01 and when I run upgrade script I clicked next I got this error

Database error in vBulletin 3.0.1:

Invalid SQL:
ALTER TABLE usergroupleader ADD index ugl (userid, usergroupid);

MySQL Error : Duplicate key name 'ugl'
Error Number : 1061
Request Date : Wednesday, March 10th 2010 @ 12:28:13 PM
Error Date : Wednesday, March 10th 2010 @ 12:28:15 PM
Script : audi-club-croatia.localforum/install/upgrade_302.php?step=1
Referrer : audi-club-croatia.local/forum/install/upgrade_302.php
Username :
Classname : vB_Database
MySQL Version : 5.0.89-community-log


Anyone can help me?

Thanks