Whenever I tried installing the latest elementary version on my computer (which currently has Ubuntu 10.04) it came up with a list of options and I chose "Install elementary". But as soon as I did, a box came up and said "/casper/vmlinuz: file not found", and the button that I was to click on to make it go away said "NO TEXTS!" All of the other options I tried, as well as "Check disks for defects" came up with the same thing. What does this mean and how do I fix it?