I have only recently integrated e-junkie into a site I'm developing for a friend. While I can get the PayPal Cart and new tab e-junkie cart to work flawlessly, I just cannot get the in-site cart to work. Whenever I add an item to the cart, it shows up and I can see the item, but any other item added is as if it's a completely new item and the previously added items are not retained.
Interestingly, when viewing the cart in-site, a lot more parameters are passed to e-junkie than just viewing it on a new tab (cart_currency, cart_id, cart_md5), which are all null.
Where am I going wrong? Any advice would be greatly appreciated.