[amarquis]

Oh and by the way, as I was just testing a few things... What happens if you add a free product (price set at zero) to your cart as a customer?

Well... the second column in the checkout page says "Payment methods: Payment is not required" - OK, perfect!

And in the 3rd column? The PayPal button is there! Yeah! And what happens if I click on the PayPal button? The PayPal popup opens... and... nothing EVER happens. Close it, and you're back on your X-Cart checkout page but... with the big black PayPal overlay over the entire page and a "Continue" link that just does nothing (same for the close button on the top right of that overlay).

In fact, the only way to get out of there is to RELOAD the page.