casino error

[cindy helmond]

hi i have an problem remove an mod for vbulletin i removed all files from server but if i uninstall the xml produck get this error :

Database error in vBulletin 4.0.2:

Invalid SQL:
ALTER TABLE user DROP 'casino_cash';

MySQL Error   : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''casino_cash'' at line 1
Error Number  : 1064
Request Date  : Saturday, February 20th 2010 @ 02:15:29 PM
Error Date    : Saturday, February 20th 2010 @ 02:15:30 PM
Script        : http://www.xx/forum/admincp/plugin.php?do=productkill
Referrer      : http://www.xx/forum/admincp/plugin.php?do=productdelete&productid=casino&s=
IP Address    : 
Username      : 
Classname     : vB_Database
MySQL Version : 4.1.21-standard-log

and see pic cant revert the casino templates.