1. When i try the white listing on our site it doesn't return to the site at all - the order gets created but it does not go back to the shop.

Sorry, there was an error in the processing of this payment.
Please contact RBS WorldPay with details of your error if the problem persists.
Server information 28/Aug/2009 09:36:52 Server ID mg1imscs5pa (WPReq-4842)

2. It would be ideal if we could display the continue button on the worldpay success page which would take you to the standard zen cart success page with the order number like it was implemented in the old worldpay module -- would that be a problem for you to implement??

3 spoke to worldpay and they will definitely implement it... We are thinking of swicthing to protex