PayPal "Error Detected" - shopping cart is empty
I have made several carts using eCart and PayPal as my main checkout gateway. The site is live (softdipes.com) and I am getting the following error when I try to checkout.
Error Detected
Your shopping cart is empty
The order is being stored in the database but PayPal seems to not be getting any data. Any ideas?
Thanks
P.S. I included a zip of most of my website. I would upload the whole website, but can't due to the file size limit.
Hope I included in the zip, everything you need to see help me with my problem.