[Jay_]

Your post is very vague. You need to provide a lot more information including a detailed breakdown of the problem at hand. What exactly is happening? What part isn't working? What solutions have you tried? Is it a common problem or is it just you experiencing issues? You need to conduct some research and investigate the problem a little further before posting here asking for help. Furthermore, you should ideally be posting in the topic in which the script was released, which I'm guessing is this topic.

EDIT: Judging by the topic title I'm guessing its user account system is MySQL based. There could be hundreds of reasons that it's not working. You probably need to learn the basics and gain an understanding with databases before attempting to use this system.