Rendering Error when I attempt to open map.

Hi, UnrealEd always freezes up now cause of some render issue.... Could someone directly diagnose the problem?
Cmd: MAP LOAD FILE="C:\Program Files\Deus Ex - Freedom Edition\Maps\Cozmo_Test.unr" REDRAW=OFF
Log: Unloading: Package MyLevel
Log: New File, Existing Package (Package MyLevel, Package Cozmo_Test)
Log: Loading: Package MyLevel
DevAudio: Galaxy SetViewport: Standard3V
Critical: URender::AMD3DClipBspSurf
Critical: URender::OccludeBsp
Critical: URender::OccludeFrame
Log: Anomalous singularity in URender::DrawWorld
Cmd: MAP LOAD FILE="C:\Program Files\Deus Ex - Freedom Edition\Maps\Cozmo_Test.unr" REDRAW=OFF
Log: Unloading: Package MyLevel
Log: New File, Existing Package (Package MyLevel, Package Cozmo_Test)
Log: Loading: Package MyLevel
DevAudio: Galaxy SetViewport: Standard3V
Critical: URender::AMD3DClipBspSurf
Critical: URender::OccludeBsp
Critical: URender::OccludeFrame
Log: Anomalous singularity in URender::DrawWorld