Hi there,
I've upgraded a 1.3.7 site to 1.3.8a and have found a problem—whereas previously the stage of agreeing to the site Terms & Conditions worked fine, now when you check this box and click submit you are redirected back to the same page, with the box unchecked, and the order cannot be completed.

I have experimented with turning off the requirement for the Terms & Conditions to be agreed to. This results in a largely blank page at this stage in the order process, but submitting that then enables you to successfully complete the order.

It may be something I did in customising 1.3.7 that has not been carried over to 1.3.8a that is underlying this problem. However, I've examined apparently likely files and haven't been able to figure out what is going on here. Anyone got any leads?