Sagepay payment issue

Please can anyone help with the following:

I am very near to going live with our website but I am getting the following error when processing a payment via the sagepay test mode were the customer is not returned to the website:

Notice: Undefined index: VendorTxCode in /home/dentalgl/public_html/catalog/controller/payment/sagepay.php on line 148Warning: Cannot modify header information - headers already sent by (output started at /home/dentalgl/public_html/index.php:92) in /home/dentalgl/public_html/system/engine/controller.php on line 27

Sagepay have told me that after the payment has been succesful at their end the customer is then not getting returned to the landing page (opencart) on our website thus returning only the notice above?

Any help is much appreciated

Thanks Jim

Any help for the above post appreciated. I have searched the forum to resolve the issue but have had no success.

I am using opencart v1.4.8b.

Thanks

Problem fixed by uploading the new sagepay.php file from the new opencart version 1.4.9.1.
It now works a treat.

Jim