SSL Puts Page in Redirect Loop

Hey, here’s the page I’m working on:

http://www.texasshredderclassic.com/registration

Made a bit of progress on the SSL… seems like it’s up and running now. But the problem is, when I set it to “use SSL” through Better WP Security, it creates a redirect loop.

I can’t seem to figure out why this is happening. Any quick ideas, tips, or insights that’ll put me in the right direction? Thanks a ton!