Marketpress potential bug - shopping cart always empty after adding items to cart

Here is the new thread requested for this issue.

List of all my plugins:

Theme is cyberchimps iFeaturePro5 with slight modifications in a child theme - nothing serious.

Single site
Godaddy

Shared SSL Is definitely working I suspect that's not the issue I just installed it around the same time

screenshots of the problem:

I click here:
http://60daymba.com/wp-content/uploads/2013/03/Untitled2.png
I get this:
http://60daymba.com/wp-content/uploads/2013/03/Untitled1.png