I have imported several items successfully from the 3D Warehouse though occasionally run into problems with the way materials are displayed. I have very little/no Sketchup knowledge and am at a loss as to how to fix these issues. For example, materials on some items of furniture appear mixed-up and ill-fitting once imported though when viewed in Sketchup they appear perfect. I have read some information which indicated it might be a "directional face" problem though I have no idea what that means. Has anyone else experienced these issues or can anyone shed some light? Would certainly make my life easier :-)