[Doctor Death]

I installed per directions (like other plugins) and the thank you button doesnt show... I am using default skin so there is no reason why it shouldnt. I see the code in the template but the button doesnt appear.

When I try to uninstall (because my tempate is now messy) I get this

Database error in vBulletin 4.0.0:

Invalid SQL:
ALTER TABLE `vywhbabh_user` DROP `post_thanks_user_amount`;

MySQL Error : Can't DROP 'post_thanks_user_amount'; check that column/key exists
Error Number : 1091
Request Date : Wednesday, December 30th 2009 @ 07:44:06 AM
Error Date : Wednesday, December 30th 2009 @ 07:44:06 AM
Script : http://www.ddsog.com/forums/admincp/...do=productkill
Referrer : http://www.ddsog.com/forums/admincp/...post_thanks&s=
IP Address : 70.333.40.132
Username : xxxxxxx
Classname : vB_Database
MySQL Version : 4.1.22-standard

Please help!

Thanks!