X-Cart forums - Website Payments Pro Payflow Edition and PayPal IPN errors

So I recently switched over to Website Payments Pro Payflow Edition for my credit card processing, running it through X-Payments (X-Cart 4.5.5, X-Payments 1.06). Since then, my IPNs (Instant Payment Notifications) have been failing for all credit card transactions. The message I get daily from PayPal is this:

Quote:

Please check your server that handles PayPal Instant Payment Notifications (IPN). IPNs sent to the following URL(s) are failing:

https%3A%2F%2Fwww.alinc.com%2Fxpayments%2F%2Fcallb ack.php

If you do not recognize this URL, you may be using a service provider that is using IPN on your behalf. Please contact your service provider with the above information. If this problem continues, IPNs may be disabled for your account.

I have checked in PayPal and the IPN address is set up correctly, it is set to http://www.alinc.com/payment/ps_paypal.php.

So it looks like for PayPal transactions, it is using that IPN address. However for CC transactions, it is attempting to use the callback address listed above. I can't figure out where it is getting that address from or how to change it. Anyone else have this issue?

Thanks!