What is different about SafeDisc 2 that prevents Clone CD from creating a perfect, usable copy?

[pwertz]

I just copied Hitman, which I think is protected with SafeDisc 2, using CloneCD and my Plextor burner. I worked flawlessly post-burn but when I went to run it on my other computer it froze.

According to the Daemon website, the backed up CD will only run in the burner it was made on. This would explain my situation.

I was wondering if anyone new why this happened, i.e. how is SafeDisc 2 different that the original SafeDisc (which CloneCD copies perfectly).

Thanks.