Head on over to the Support and Links section at www.Psychonauts.com
for an update of the awesome demo!
This should fix some support issues, like more support for Thunderbird CPUs.
For those of you who havn't yet grabbed this fantasticaly awesome demo, register at www.Psychonauts.com
and head to the Gray Matter section to start downloading! The patch is even included!
If you have had issues running the demo, you might be better served downloading the complete new demo version.