The original discussion thread is here: viewtopic.php?f=4&t=3612&hilit=spacecamp+replacement
There was a dropout on one of the cues where a few bars of music went missing in the original pressing of the CD (through no fault of Intrada). Our favorite label on earth heroically chose to be proactive and replace all the copies that they had issued.
In answer to your final question regarding how to tell which disc is which, this statement from Doug is germane: "We even corrected the product number typo on the label. You'll know you're getting a good copy because the volume number on the disc and the number on the spine of the packaging now match."
Now all ya have to do is match up the numbers
