Getting a "Method 'Refund' .... does not have an implementation" error

Hi,

I successfully implemented a custom payment provider for Barclays ePDQ using nopCommerce v1.4.

However, in upgrading to v1.5, I'm now getting the following error on the CheckoutPaymentMethod.aspx webform:

"Method 'Refund' in type 'NopSolutions.NopCommerce.Payment.Methods.ePDQ.ePDQPaymentProcessor' from assembly 'Nop.Payment.ePDQ, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' does not have an implementation."

Any ideas?

Many thanks
Tony

The IPaymentMethod interface has changed for version 1.50 (four new methods, including Refund, and four new properties). Does your payment provider implement the new methods and properties specified in the interface? Did you add your payment provider project to the solution and recompile the solution or just add the reference to the 1.40 assembly?

See file: \Libraries\Nop.BusinessLogic\Payment\IPaymentMethod.cs

.