UT on Linux problem

[nukes]

Right, I'm working my way through getting my games working on Linux now. So far I have Monkey Island 1+2, Day of the Tentacle, Quake 1, Quake 3, Enemy Territory (awful lag though) and now I want UT.
Problem is this:
After I install, I go to run the game, and I get this:

root@nexus unreal-tournament # ./ut
Unreal engine initialized
Bound to SDLDrv.so
Joystick [0] : Unknown Joystick
SDLClient initialized.
Bound to Render.so
Lighting subsystem initialized
Rendering initialized
LoadMap: Entry
Bound to Fire.so
Case-insensitive search: Botpack -> ..\System\BotPack.u
Bound to IpDrv.so
appError called:
Class Actor Member Owner problem: Script=48 C++=52
Executing UObject::StaticShutdownAfterError
Executing USDLClient::ShutdownAfterError
Signal: SIGIOT [iot trap]
Aborting.
Exiting.
Name subsystem shut down

I get the same running as a regular user in the games group.
I'm on Gentoo, and installed the game through portage. I know there is a new version out, but this should work as it is. What's going wrong?

[willy_ph]

Bump to get Nukes some help.