Digital downloads give browser error 330 in chrome.

I am attempting to set up a digital downloads store for a client. Everything seems to be working correctly, but when I buy a product and it takes me to the order page and I click download, the browser (chrome) returns an error and the download doesn't start. I have included a screen shot. In firefox, it also returns an error, but the download starts. I honestly just really don't know where to go from here. I don't know if it's a problem with wordpress or my host. Any help would be greatly appreciated.

I am running:
Wordpress 3.3.1 on Bluehost and the newest version of marketpress.