I can confirm that the same happened to me just now. Donated 10 bucks, no code. I don't know if the process has become broken, or if it's because I didn't log in to paypal first (I was too lazy to remember my paypal login info, so I just filled out a form with my info/credit card stuffz), but I was brought to the same screen as stickmasterluke, with no code. I've never donated before, so I didn't know anything was wrong. Figured the code would be in my receipt, so I opened up my email, read receipt email, no code. Tried the confirmation number, was not a code. Stumped.
It's not that big of a deal really (though I do want me a full set of alternate chimeras....mmmm.), it's just a wee bit of a letdown. More importantly, if others are experiencing this problem, it may remove incentive to donate, and Elements could really use some funding right now. :/