There is no option for direct pay. PS3 is configured to use PayPal Express Checkout Only (See screenshot 1 attached)
When user views their cart there is no option for "checkout" only an option for PayPal Express Checkout. (See screenshot 2 attached)
The error is that if they click the link they are presented to return to the checkout page, they are erroneously now presented with a checkout page which includes the direct pay option, for which there is no gateway. (See screeshot 3 attached)
TM