We're getting "Your payment cannot be processed, please go back and try again" for every live paypal pro transaction (paypal standard integration works fine). I've reset the API username, password and key at paypal pro, but still no luck, I've even UNinstalled DT Register, and then installed a fresh copy of the newest version, no luck. Anyone else having this issue? I have had an open ticket for two and a half months so I'm trying here since the ticket system seems to be not working.