The application is Wordpress.
Basically the setup is required as follows;
1) User clicks Facebook login and auths facebook app but no registration should be performed yet;
2) User should then be directed to [login to view URL] in order to complete the registration form for projectopia
3) At this stage the users registration should continue normally as planned, and the users facebook data should be pulled into Buddypress. Please let me know if you are available today as I am rcurrently available to grant the required access for you to add the relevant and required plugin and code.