First off, how are you booting the DVD? Is it burnt? or are you using a USB drive? I ask because that error is what you generally get when you the media is bad that you burnt it on. Also, I get that problem with iDeneb 1.4 and booting the retail DVD.
I usually install iDeneb by using my mac to restore the ISO to a USB Hard drive and boot with a Boot-132 disc. If you can do that, I'd suggest trying that method.