I have been asked to Ray Trace some file which were created in Revit. I have been sent files in DXF, DWF, FBX & RVT. The only one I can import in X6 is DXF which does not give me 3D. My customer says that the FBX file will have everthing I need but X6 will not open it. I tried to import it into SketchUp Pro but same problem. Does anyone know of a way to get this file into a Chief compatible format?