Downloads don't download, checkout never completes.

No errors in the log. Product download field shows http://photojurni.com/wp-content/uploads/2012/02/dealer-export.csv but when a customer clicks to download it takes them to the product page. I've showed a screenshot of the order summary. I've also included screenshots of the error messages when I try to checkout using paypal or credit card. Looks like the transaction is going to go through then I'm taken back to my website with the following screenshots.