I am having trouble with Zen Cart and Paypal checkout, when the buyer clicks the final confirm payment step I get this error message from Paypal "We are sorry for the inconvenience; however, at the present time we are unable to use PayPal to process orders from the geographic region you selected as your PayPal address. Please continue using normal checkout and select from the available payment methods to complete your order " , the shop location is set to "Ireland" and the shipping method is per item, it seems that when paypal is validating the address there is an issue with validation , any help would be greatly appreciated..