Originally Posted by duckshepherd
Is there some kind of bug that is preventing me from doing this?
If there is, then this is the first thing I've heard about it. I have installed Fedora 12 several times, and each time I clicked that button to install GRUB in the first sector of the boot partition. So the only things that came to my mind were the integrity of the downloaded ISO file, the integrity of the data on the disk, or the optical quality of the disk.