Fix couple of issues with CubeCart V4 website

Hi We have client's CubeCart V4 website with a couple of small issues : 1) The client is using the built in SagePay Form payment gateway and after taking payment the customer is returned to the store but instead of saying that the payment has been successful and updating the order status to processing it instead says that the payment has failed and leaves the order at Pending. The SagePay payment gateway has been put into test mode until this issue is fixed (he is using another gateway in the meantime) so the developer can do as many tests as required in order to diagnose and fix the problem 2) The client had some custom development work done to add bundled product functionality and there is a simple search facility to add products to the bundle and this is not working although a very similar search for "Related products" works perfectly OK Full admin access to the live store will be given along with FTP access