It seems to be random. As we remove the Internet and printers from the exam computer, the file is copied to a USB drive. So, the file is saved, closed, and copied to a USB. I put the USB into another computer that has the software and print from that machine. Sometimes it works, sometimes it does not. Today, for example, I am 1 for 2 (worked once out of two different exam sessions). Not a major issue, more of an FYI.