[cflsystems]

Yes I did with 4.2.1. With 4.3.x should be no pain installation. X-Connector is a module so it won;t break your cart. All other methods will continue to work as tehy are right now. I would suggest - install X-Payments and X-Connector. Configure the module in xcart. Take a note of the paymentid associated with the module. Modify your checkout page to show this paymentid method only to one customer login (you login so you can test). That why the module will be active for this one customer only and you can do testing before turning it on for all customers.