I tested this demo using:
ASUS P5N-E nForce SLI motherboard
Intel Duo 2.66G
4G DDR2 PC6400 RAM
Vista Home Premium 32-bit DX11
NVIDIA GeForce 9800 GT 512
SB X-FI Xtreme

GameStudio Commercial 7.82/WED V6.941

Ran the demo 15 times in WED and 15 times in SED without a crash or problem. (I exited the demo and restared each time). I started the demo and moved around until the character was killed or the enemy AI were.
I have a registered version of IX Copper.
I will continue to restart the demo through out the day.