RTcw demo wont play

[Crashing]

Hello, i have a small problem with the demo's. When i install Seismovision 3 lite and then want to play a demo Wolfenstein starts but it hangs before it gets to play demo or before i get in menu.
When i press ctrl alt del i see Seismovision 3 lite isnt responding and after i stop it Wolfenstein still hangs and i have to end the process to end it. After that Wolfenstein wont start on its own and i have to reinstall it to get it to work again.
Im quite a noob with this stuff but older versions did work and i have downloaded and installed the Return to castle Wolfenstein AVA update for 1.41b, which is the version i have.
I have win xp home installed.
Do you have an idea what im doing wrong?
If you need any more information just say so and i will try to get it.
Hope you can help me fix the problem.

[alishba]

in seismovision, all the games have a list of "demo control config" such as "High-Detail.cfg," but for cod there are never any cfg's listed. I went into the wolfenstein folder in seismovision and copy pasted the wolf configs into the cod folder and restarted the computer and ran seismovision and still the same problem