Ah, I remember. And that was with both files, not just the big one, right?

Have you burned ISO's before and had them be successful? In other words, you're actually burning the ISO and not just burning an ISO file onto the root directory of a Joliet disc?

And if you don't know the difference, then that's probably the problem.

Also, is it possible that the download got corrupted? Did you use GetRight to grab the file?