I checked all the iso images with the md5sum, and all were ok. I even reburned all of the disks at the slowest burn speed and tried installing, same problem.

I tried installing the KDE interface instead of the Gnome, still got the gnomecanvas error.

Maybe I should do as Bery suggested, and install grub from the rescue mode, although I'm not sure redhat installed everything.

Switch Distro's?