By the way, yes, I've searched the forum. All I've turned up are threads in which it is explained that the errors are because of a bad burn to the CD or DVD. THIS IS NOT A BAD BURN. It is replicable across multiple different machines and MANY different DVDs and CDs.

Unless I've got four defective optical drives and every computer I've used the disks in is defective, again, let me reiterate that this is NOT caused by a bad burn.