Ultimate Facebook Registration form showing up very odd.

I wanted to add a 'Register Now' button if the user is not logged in so I went to the login page, clicked register and when I click register with facebook it shows an embedded iframe in, I suppose, my default theme page template... and it shows the full path in my server as the title which is not good.
Link to facebook registration page: http://area25dallas.com/wp-login.php?action=register&fb_registration_page=1

Thanks!