When I try to record a demo using "demorec test", ut2k3 crashes and I get this error:

Critical Error

UT2003 Build UT2003_Build_[2003-04-07_17.42]

OS: Windows XP 5.1 (Build: 2600)
CPU: AuthenticAMD PentiumPro-class processor @ 1405 MHz with 255MB RAM
Video: ABIT Siluro T400 (1241)

Failed to find object 'Class Engine.DemoRecSpectator'

History: UObject::SafeLoadError <- UObject::StaticLoadClass <- UDemoRecDriver::SpawnDemoRecSpectator <- UDemoRecDriver::InitListen <- ULevel::Exec <- UPlayer::Exec <- UViewport::Exec <- UWindowsViewport::Exec <- UObject::ProcessEvent <- (InteractionMaster Package.InteractionMaster, Function Engine.InteractionMaster.Process_KeyEvent) <- UInteractionMaster::MasterProcessKeyEvent <- UEngine::InputEvent <- UWindowsViewport::CauseInputEvent <- WM_KEYDOWN <- UWindowsViewport::ViewportWndProc <- WWindow::StaticProc <- MessagePump <- MainLoop
I've only tried recording demos in Isntant Action mode.
Am I doing something wrong here?