Real quick I just opened two versions of a bryce object in hexedit...a default sphere and a default sphere lifted and elongated along the y-axis only. Thanks. Some success at last. The dark fortress starts to yield! The many small differences may be all the point coordinates nd suchlike. Try imputting a small .OBJ mesh file, and then the same file with one point different. Or try changing one color and seeing what changes that makes.