Blank page after registration

Can you go to the Global Configuration area of Joomla and set Error Reporting to "Maximum". When you do that, the blank white page should hopefully show a real error message. Let us know what that message is as it will help us narrow down the problem and provide the next steps.

Thanks,
Alex

I just registered using Facebook through JFBConnect. After doing so, the following email arrived:

Ciao Alex Sourcecoast,

grazie per esserti registrato su Danze popolari, danze folk, danze trad e neo-trad.

Adesso puoi effettuare il login su www.ioballofolk.it/ usando le tue credenziali facebook o i seguenti nome utente e password:

There wasn't any activation required or 'confirmation' after I registered. I was simply registered, logged in automatically and brought to:
www.ioballofolk.it/users/profile.html

Subsequent logins worked just fine as well.

I'm assuming that's the place you have setup for the redirection.

Can you tell me if what I stated above seems correct behavior and/or how it's different from what you see? In general, I didn't see any blank white page. If you are still seeing the white page, can you:
a) try with a different social network account altogether
b) try with an account that doesn't already have a Joomla user with the same email address on your site

Hopefully, one of the above will help narrow things down. I believe you're seeing the issue, but it's very difficult to debug when I can't recreate it and when there's no error shown on the blank white page.

Thanks,
Alex