Alright I have made progress this morning. I added the paypal checkout functions and sessions to the checkout page and here is what happens (included screenshots and revised cart, checkout & confirm pages);
1) Cart looks correct click on checkout
2) Go to checkout: whether I use express checkout or enter a credit card I am redirecting to the PayPal Sandbox
3) I enter my information; I click continue, it brings me back to my cart page which now reads "Cart Empty"? This should bring me to my confirm page to choose shipping method, display items in cart, prices, discounts, residential surcharge (if checked on checkout page), payment method, billing and shipping information. Instead I get an empty cart.
Can you please take a look at the attached zipped file and let me know what I am missing here? I am going to check through the paypal php pages that I believe ecart created.
Any help is greatly appreciated