When you get to the password page it is because the login failed. I'm not sure why you are failing the login though. If you can please post back with a copy of your login page, the password page, the registration page and your WA_SecurityAssist folder in a zip archive attached to your response. Also, include an export of your db. I will use your files and info to check into this further.
When you are getting sent to the password page what do you see up in the URL?