Hi,
as this seems already solved just for the files. this fix let Planescape Torment crash (before it just ended silently by releasing its "primary state block") - it worked before the ddraw patches white fine. i will soon file a bugreport and provide a link to the demo.
Can you also attach a +ddraw,+d3d7 trace? Preferably with and without the hack? There is a demo of this game? I have only seen some demo movies, no playable demo :-(
Stefan