Celestial Descent hasn't exactly had success in the RPG Making community. It's a shame, too, as it was one of my first attempts to do something truly different.
What you don't know is that the reason Celestial Descent even exists, is that the Dragon Kingdoms games hit a tough spot in 2001, and at the time, I didn't think there would be any more games in the series (#5 almost got cancelled, but instead was changed GREATLY from the original version).
Celestial Descent never had many downloads, reviewed poorly, and didn't have very many fans. For what it's worth, it got better reviews than Dragon Kingdoms IV (but not V), so maybe someday it will reappear in a different form.