I first put in the disc and copied the demo to the xbox (soft mod, splinter cell exploit, unleash X dash) and tried to run it off the hard drive. Result was system 21. I then tried to run it off the actual disc itself and still the same error occured. It might be looking for xbox live as it does have a dashupdate.xbe file with it.
Either way if anyone was able to get the demo working, please let me know---
Edited by robot2, 13 September 2006 - 09:26 PM.