Hi there. I have OC 18.104.22.168 and i use Paypal Standard as the payment method. I've had many customers say that they get errors when they try to checkout. I have not had that problem, and I have not actually seen the issue. The log files were empty, so no help there.
I guess I'm hoping that someone might actually be able to "read my computer's mind" and give me some places to look for the issue.
Unfortunately, I don't have any more information. I'm just hoping that someone has come across this before, and they have some "It could be ..." advice.
markherman1234 at gmail dot com