Problem with Activity mod

[jcvallenato]

hello averybody i have a problem with Avtivity mod for vbulletin v3.6.8 give this error
Database error in vBulletin 3.6.8:

Invalid SQL:
ALTER TABLE `user` ADD `wwu002activity` INT UNSIGNED NOT NULL ,
ADD `wwu002activitydate` INT UNSIGNED NOT NULL ,
ADD `wwu002memberlevel` TINYINT UNSIGNED DEFAULT "1" NOT NULL ,
ADD `wwu002fullmemberdate` INT UNSIGNED NOT NULL ,
ADD `wwu002lastvisit` INT UNSIGNED NOT NULL;

MySQL Error : Duplicate column name 'wwu002activity'
Error Number : 1060
Date : Thursday, July 26th 2007 @ 02:54:00 PM
Script : ]http://www.xxxxxx.net/foro/admincp/plugin.php?do=productimport
Referrer : ]http://www.xxxxxx.net/foro/admincp/plugin.php?do=productadd
IP Address : 189.154.1.245
Username : jcvallenato
Classname : vb_database

[Kirk Y]

It looks as if you're trying to re-install the product after it's already been uploaded. Are you trying to update it?

[jcvallenato]

how to delete this mod for install again?

i have a problem with the forums in the past months and i reinstall a backup