I tryed it at my friend's house, the installation works great the CDKEY doesn't match.
There is no need to fill in a key. Just put CD 2 (labelled "Disc Two" or "Game Disc") in the CD drive and start up.
If you have tried to enter a key, maybe you entered the wrong key. You can delete this by going to the registry (click START, click RUN, type REGEDIT and hit OK). Look for the key HKEY_LOCAL_MACHINE\SOFTWARE\LarianStudios\BeyondDivinity and check if there is a value "key" or "keys" there. Delete it if it is there, but do not touch the other values (default, installdir, lang, version).
If the game does not start with CD 2 in the drive, have the protection gather information and send this file to support <at> larian <dot> com.
