Update CheckoutStep_PaymentMethod.php
Update CheckoutStep_PaymentMethod.php

Make the extend name consistent with the form name.  There is already an extend name "updateConfirmationForm" in the ConfirmationForm function within the CheckoutStep_Summary class.
webtorque7/silverstripe-shop,markguinn/silverstripe-shop,bummzack/silverstripe-shop,hpeide/silverstripe-shop,bummzack/silverstripe-shop,StephenHonor/silverstripe-shop,StephenHonor/silverstripe-shop,bummzack/silverstripe-shop,burnbright/silverstripe-shop,silvershop/silvershop-core,markguinn/silverstripe-shop,hailwood/silverstripe-shop,webtorque7/silverstripe-shop,StephenHonor/silverstripe-shop,webtorque7/silverstripe-shop,mediabeastnz/silverstripe-shop,hailwood/silverstripe-shop,mediabeastnz/silverstripe-shop,hailwood/silverstripe-shop,mediabeastnz/silverstripe-shop,burnbright/silverstripe-shop,markguinn/silverstripe-shop,burnbright/silverstripe-shop