Sorry to post another of these, but from what I gathered from the resolved post someone had, a mod had PM'd them with some troubleshooting steps.
Same situation, made a event registration for me and a friend, sent it to my facebook email, and.....nada. It went through as it gave me a "You're RSVPD" and gave a confirmation code (which unfortunately i did not write down as I expected it to hit my email).
I have the personal information used of course, and any help would be greatly appreciated.
The same situation happened to a friend of mine who also set one up for him and a friend utilizing his facebook email.
Thanks for the replies, and sorry for the clutter!