okay..I can give you this..
It is this:
It could also be that the user is crossing domains. when they first arrive at the home page, they are coming to:
index.php
it is possible that the add to cart button is forwarding them to:
cart.php
I did have them going from http to https and thats when I got the error. Then I changed the cart and the checkout page with the instructions from webassist and now its happening between the cart and the checkout page. Is it possible that the code is not in the right order on shopping cart page? I am attaching the 2 files.