I have put up an online store on my website, and so far it works great for IE, Chrome and Firefox (Mac), minus a few formating/layout things, but if I try to test the "place order/pay" using Firefox on a PC I either get an error stating "Shopping Cart is Empty" when it transfers to the Paypal screen, or it doesn't make it to Paypal at all (continuously loading/goes blank).
I'm using firefox 20.0.1
The store is located here, http://coldcrafteffects.net/blog/?page_id=2346
It works fine with Sandbox in all browsers, so I'm not sure how to trouble-shoot at this point.
This seems to be a common problem, but I haven't actually seen many solutions.