CS produces empty Geometries/PrimitiveSets
osg::Geometrys and empty
osg::PrimitiveSets are illegal in OSG and cause undefined behaviour (or a crash on Windows Debug builds). http://forum.openscenegraph.org/viewtopic.php?t=4505
So far, I've confirmed that this happens when loading Balmora (-4, -2) in the CS with Lysol's texture packs (which I know trigger shaders to be used, but I doubt would make a difference to the issue here) and Morrowind Optimisation Patch (which might, as it edits some Nifs). It might happen in many other situations, too. I've just not tested.