That's what I get when I click on the "Untitled" disc icon on the desktop. Some of the items will launch Terminal when I click on them, and other items will trigger a popup that says there's no application to open the disc. I think maybe I'm missing some software to read the disc. The images I'm trying to view are MRI x-ray images of my left small finger that was broken last year. The DVD was given to me by the x-ray people.