Appending objects with constraints expands links to objects (according code) but doesn't give such objects a link to Scene. Apprently, somewhere in NaN days, someone commented a call, which already invoked comments... here's the full code + comments now: /* give a base to loose objects */ give_base_to_objects(G.scene, &(G.main->object)); /* has been removed... erm, why? (ton) */ /* 20040907: looks like they are give base already in append_named_part(); -Nathan L */ /* 20041208: put back. It only linked direct, not indirect objects (ton) */ :-)