Artifact?

Hi to all. My first try and i get this artifact kinda thing. What can it be?



System:
win xp pro
ati radeon 1950 pro with latest driver
directx renderer

In addition i can not run the hydrax editor with GL, it throws an exception:


OGRE EXCEPTION(2:InvalidParametersException): Named constants have not been initialised, perhaps a compile error. in GpuProgramParameters::_findNamedConstantDefinition at ..\src\OgreGpuProgram.cpp (line 896)

viewtopic.php?f=20&t=9298&hilit=tangent&start=30

thanks...