As far as Toast, don't drag and drop. You may have corrupted the images (I remember something about not mounting the images from the 2.x instructions). You may need to download again, then just use the Disk Copy, if you have OSX. Select File > Burn Image... Or if you have to use Toast, be sure to select the burn type as an ISO. (use the other button and then choose ISO 9660). Regards, LKB