I have installed sagepay form. I used addon: osCommerce Community Add-Ons
I am using SEO URL and URL Rewrite type is Rewrite. The problem is after entering card details, when sagepay tries to re-direct to my website, it shows error 5006. I have searched many threads but couldn't find any solution. Even tried to call sagepay twice but they haven't got any solution. They say, your re-direction URL is wrong. My guess is when sagepay tries to re-direct to my website, it looses session. i.e. if I copy and paste the link (when sagepay shows error) to another browser, it takes me to the checkout page and shows no products in basket.
Any help is appreciated.