Hi,
I believe we found a bug in Paypal Express checkout. The Checkout handler does not take th quantity into consideration, so when purchasing >1 of the same product, we get an error from PayPal.
I checked the CheckoutHandler code, and (unless I'm mistaken), the addRow var within PayPalActionResult is not multiplying the amount by the quantity.
From the looks of the log, PayPal wants the full amount not the unit price. Can anyone confirm that?
Nuno