Demoshield have stopped working....

Hey!

I have got a critical problem with the installation of TW:Kingdoms expansion. When I first launch it from the CD and then press launch.exe the CD runs up smoothly as it normally should do but then it comes a error up which says the "Demoshield have stopped working... I can though run the setup.exe file from TW:Kingdoms folder and then it installs without any problems. But then after I have finish installing the game the Demoshield error shows up again.
The game worked fine for some mouth ago without any problems at all, either launching it or play it. :help: please. I want to play again :laugh4:

Thanks in advance!