Can't checkout

Site was launched yesterday, all was working great, but now when I click the PayPal checkout button it just goes to a blank white page

http://zuribellajewelry.com/store/ipn_main_handler.php?type=ec

Why is that?

I checked out and bought something yesterday to test, everything was working great, now nothing.

It's a GoDaddy site so I tried turning off the CURL proxy under config settings and that didn't help.

Any clue?

Okay, user error (of course)...I screwed it up. I am trying to come up with a good way for free shipping over $60 and $3.00 shipping under. I have shipping set for $3.00 under shipping zones, and free options using total for $61. That seems to be working, but I don't like "Best Way" under Flat Rate when it's not the best if Free Shipping is available.

What I did (stupidly apparently) was change the text in the language flat.php to be Shipping $3.00 under $60 instead of "Best Way". Not sure if it wants Best Way in there or if the $$$ was throwing the coding off, not the strongest PHP buy so maybe that screwed it up.

Same with freeoptions, changed "Free Shipping" to "Free Shipping Over $60"

Any ideas to accomplish what I'm trying to do?

I'm not sure, but since '$' is a special character, you may need to escape it there ($). Worth a try.