Like Raze said, there's indeed nothing wrong with the disk version !
What's more : so far the GOG version have a problem with the ingame music ! In some aera's the music DON'T change (the no disk version is missing some music tracks or there's a problem with the progrma code)... which is in some way sadly because the music in DD is really fantastic !!
But even without the music DD is a fantastic addictive rpg !!! Can you imagine ?
