doh...same trouble here, I wish the exact cause was found.
How many LOD's MUST you have for an object, and which ones need texturing?
I have the 0.00 LOD, geometry LOD with weight, and land contact LOD...only my 0.00 LOD is textured.
Is there a view LOD that is mandatory for seeing it from the outside and does that one need texturing?
thanks for the noob help. Brsseb is getting me this far... :-)