"Cyclic Redundency Error" is just Window's retarted way of saying "it keeps giving an uncorrectable error when I try to read this one bit." You'll find that with bad burns (too high speed, poor quality media, screwy firmware, etc.) you'll get these when attempting to copy files to your harddrive from the source disc -- like what you're running in to now. Chances are the source disc is either dirty/damaged like has already been suggested, or it was a bad burn in the first place. Look at the bottom (data side) and see if there are any lighter circles within the burned area. If there are chances are that's what it is.