DemonStone v1.1 Update NoCD
 

The DStone NoCD patches on GCW use modified "Demonstone.exe" and "Demonlaunch.exe."

This conflicts with the v1.1 update from Atari which which comes in the form of an updated "Demonstone.exe."

I found that you can use the v1.1 updated "demonstone.exe" from Atari and just the "Demonlaunch.exe" from vengancE's v1.0 NoCD download on GCW to bypass anoying CD check.

Hope this helps!

This is because the updated DemonStone.exe is not protected with SecuROM but the DemonLaunch.exe is as it's not updated! Using the 'cracked' DemonLaunch.exe totally removes SecuROM from the game when you use the v1.1 update!