[M3xital]

Hi,
I'm new to vBulletin, I've just installed this hack and i can't make it work in the right way.
If i hit the thanks button i get this message

xxxxx, you do not have permission to access this page. This could be due to one of several reasons:

1-Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access
administrative features or some other privileged system? 
2-If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.

Then when i come back to the thread i can see that i thanked that post.
I get the same error message if i try to remove thanks.
Can someone help me?
Thanks