Enterprise library - Help

I have an ASP.Net web application, not a "Web-site" application. I have it deployed to the DiscountASP server.
My application has a registration and validation process on the "public" pages. Once the registration is completed you can login in an use the application.
I tested my registration process and it works just fine. The hosted SQL server DB was updated and new user was created.
The problem seems to occur when I am logging in via the Login page. I type in the user id and password I created at registration and my app just keeps throwing the "invalid password" error.
I am using Enterprise library 4.1 for my application. I am using the Data block, Caching block and Security block. I have a separate DLL class library for my security layer. This class builds a membership object upon login to validate the user and password. This is the part that does not seem to be working.
Of course this whole process works just fine on my PC. If someone can point me in the right direction on how to troubleshoot the app and/or track down why this is not working, that would be great!

BTW, I did search the forum for Enterprise library and read all the threads that came up. There was common link in all of them, that seemed to work for a lot of people. That link does not work right now!