Trouble Copying... Options

[Doodmar]

Hey guys

Recently I rented Guitar Hero 3 and attempted to make a copy of it. I have successfully made copies of over 20 Xbox 360 games thus far, but I am having a lot of trouble with this game.

I'm using XBC to read/write the discs, and everything goes smoothly.. the disc passes all security checks, etc.

However, when I try to play the game it gives me a "Disc unreadable" error after it launches. I've tried this 3 times, and get the same results each time.