Hi
i have added the module and set the values in the two php files, i have then set the right values within the admin area. But now i go to test the payment gateway and as soon as it gets sent to Epdq i get the following error

CPI Error
It is not possible to order from the store at this time.
Please contact the merchant for further information.
Error:
Mandatory information not present.

Im not really sure where to start in order to get this module working with my zen-cart.

I would be very greatful for any advice anyone can give me to get Epdq working on my shop.

Thank you

rob