Can't use preorder code

Bought a preorder for the hero foils while I was at PAX East.  Can't use the code.  Whenever I try to enter it on the form, I get error 500.  Afterward, I get error 500 any time I try to visit checkout, until the session ends and the discount code gets removed from checkout, at which point everything is awesome, unless I try to use my preorder code.  =/

Schadrach,

Give it another try. We had an unexpected error and just tracked it down today. If the site remembers your shopping cart and the discount is already there, you should just need to recalculate for it to apply.

Thanks!
--Joel