UPDATE 10.3.2014:
Below link does not work. We are working with PayPal regarding getting the new link.
Hi Everyone,
See how to configure PayPal Payments PRO in X-Cart v4.6.x and X-Payments 2.x at
https://www.paypal-globaled.com/cart/xcart-ppp/xcart-ppp_player.html
Also, make sure you have valid email address in "orders department email address" at General settings/Company options/Company emails section otherwise you may encounter
this issue.