Summary:
Can't get past Billing Form
Detailed Description:
In 1.6.7 I cannot get past the Billing Form. I've tried using my old template
(worked in 1.6.4) and the new default template. I've tried it on a couple of
different test installations, one on XAMPP/Windows, one on Linux.
If no one else is getting this error, I'll break it down and try to isolate the
cause.