was able to add nautilus library (prime) to my cart without the previous message saying hey, stupid you already own this...  despite have bought it in  Order #: [112393454](http://www.renderosity.com/mod/bcs/account/?ViewOrder=112393454) · Purchased on Sep 12, 2013 

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also on the first page of checking out with the display on stuff added to prime across the top... right clicking on an item and saying open in new tab... opens a duplicate of the page.

while checking the stuff on the first page of checkout, I went back to the plain shopping cart page where it now has a message across the top that says:
Caught exception: It appears this item is already in your cart. 
doesn't say which item and if I reload the cart from drop down menu it shows all the items with no message. 

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top is cart after going back from page one of checkout
middle is a fresh cart
bottom shows item already purchased