Hello
This isn't a rush but the paypal refund (and partial refund) quit working on my site. It worked on 11/14. Now, it kind of flashes and sits there. There are no errors in my logs. I turned on Paypal debug and no errors in the log files. I don't remember doing any changes to any files (but I would not swear to it in a court of law).

Since I can go to paypal to do the refund, there is a work-around.

But I do want to solve it....

So if anyone can point me at something to look at that I haven't already, thank you.

Zencart 1.5.4
php 5.4.45

alot of add-ons; non recent

Shipping modules: USPS, Zone rates