New Post: Paypal suddenly fails.

That's odd!

The easiest thing to do is select and copy the PayPal code and then paste it into notepad for safe keeping. Then delete the PayPal setting.

Then view the PxPay.gateway, type PayPal.gateway into the Name field and hit Update to save it. This will make a copy of that setting.

Then replace the code with your PayPal code and save it. Make sure there are no line breaks in the middle of any of the lines.
See if that fixes it.
Rob