Hello, i'm trying to add my payments service to Payments.config, it shows up in the drop down list and i can selecft it but when I go to checkout i get this error:

Error Loading Razor Script (file: uCommerce Payment) Object reference not set to an instance of an object.    at uCommerceMoneris.Library.MonerisPurchase.CreatePayment(PaymentRequest request)
  at UCommerce.Transactions.TransactionLibraryInternal.CreatePayment(Int32 paymentMethodId, Decimal amount, Boolean requestPayment, Boolean overwriteExisting)
  at Castle.Proxies.TransactionLibraryInternalProxy.CreatePayment_callback(Int32 paymentMethodId, Decimal amount, Boolean requestPayment, Boolean overwriteExisting)

my dll has namespace uCommerceMoneris.Library

the class MonerisPurchase implements IPaymentMethodService and IPaymentFactory

My entry in Payments.config

<!-- Moneris (Canada) -->

<component id="Moneris" service="UCommerce.Transactions.Payments.IPaymentMethodService, UCommerce" type="uCommerceMoneris.Library.MonerisPurchase, uCommerceMoneris" />

I'm very new to this stuff because i haven't used .NET in quite some time unforntauately. I really need to know how to set up this config file because i have been stuck on this for 2 weeks literally 2 weeks. i can't seem to get this to work not matter what i do, how can i get the payments.config setup so that my service will be called and not null exception??