According to the manual the E button is visible with lights heightfields, lattices, stones and imported meshes, i.e. it brings up the edit menu for any objects that have a general 'Editable' characteristics. Where this differs from the 'A'ttributes menu option seems fairly arbitrary. As I said though its possible that mesh objects may need to be ungrouped before they can be exported. It may be that the "imported mesh" status is somehow lost if the objects are saved then reloaded, although that would seem a bit peculiar. Bill