Version: 1.3.9f
Host: GoDaddy

Trying to integrate with eProcessing Network and I've followed the instructions on their website and as outlined here:

http://www.zen-cart.com/forum/showthread.php?t=66571

However, I can't get transactions to process. I keep getting the very unhelpful message:

- Your credit card could not be authorized for this reason. Please correct the information and try again or contact us for further assistance.

Just like that with nothing preceding the hyphen. I'm pretty stumped.

I've tried regenerating the Restrict Key several times to make sure I wasn't doing anything wrong there. It doesn't help.

The error is also generated if it is in either testing mode or production.

Any ideas? Thanks in advance.