I had similar trouble with Planescape: Torment, and
then found a workaround by booting in Safe Mode to
install the game. After that, the game ran fine, even
in "normal mode."
I don't know if that will work for you with KoDP, but
it's worth a try!
Dan
Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games.
http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow