Just downloaded trial version yesterday 1.06.01e and later I found 1.06.01u and presumed it was a more up to date version so I updated it to 1.06.01u and now it won't even work anymore.
When I double click the .exe it says:
Xenocode Virtual Appliance Runtime
This application has encountered an error: 0x8000FFFF, with following description:
Please contact the publisher of this application for more information.
Don't know if it helps but I am trying to run it on Vista.