The longest journey NoCD crack

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Hello...

At first place, I'm sorry but I don't speak/write english very well.
I am trying to do a backup of "The longest journey" spanish version. In this version there is a lot of files (12) that can't be copy.
In the original disc of the game appear a ring close to center. When I try copy it with CloneCD, Alcohol or Nero, the process end at 6% (the ring) and the CD-Writer (Plextor) not continue.
I had try to change options of this programs, but always with the same result.
In this page, appear a NoCD patch/crack for this version, but if you compare the cracked .exe with the original, they are equals (binary comparison).
In crackmanworld, there is other crack, but it agree with the original file also.
I ask: how is it possible? Don't exist any crack for this game?
Thank you...