Directory signup page redirecting to wrong page

Hi, I want new signups to go to this page so they can fill out the form and then make payment. In testing it works. http://hurupu.com/listings-2/signup/

But what's happening is that my customers are being redirected to this page instead. I have not been able to figure out the cause for this.

http://hurupu.com/listings-2/signin/?redirect_to=http%3A%2F%2Fhurupu.com%2Flistings-2%2Fsignup%2F