_28BYJ_48__mounting_wings_rect1.s
Traceback (most recent call last):
  File "nathan.py", line 227, in <module>
    main(sys.argv)
  File "nathan.py", line 222, in main
    motor = _28BYJ_48(brl_db, name_tracker.get_next_name)
  File "nathan.py", line 77, in __init__
    mounting = self.mounting_wings()
  File "nathan.py", line 152, in mounting_wings
    wing_block_name),
  File "/usr/local/lib/python2.7/dist-packages/brlcad-0.0.1-py2.7.egg/brlcad/primitives/combination.py", line 33, in union
    return UnionNode(args)
  File "/usr/local/lib/python2.7/dist-packages/brlcad-0.0.1-py2.7.egg/brlcad/primitives/combination.py", line 185, in __new__
    arg = [leaf(x) for x in arg]
  File "/usr/local/lib/python2.7/dist-packages/brlcad-0.0.1-py2.7.egg/brlcad/primitives/combination.py", line 27, in leaf
    return LeafNode(args[0])
  File "/usr/local/lib/python2.7/dist-packages/brlcad-0.0.1-py2.7.egg/brlcad/primitives/combination.py", line 103, in __new__
    result.name = LeafNode.extract_name(arg[0])
KeyError: 0