(OTTD_graphics)pdq2s-mbp-2:iron-horse andy $ python src/render_nml.py
[RENDER NML] render_nml.py
[IMPORT VEHICLES] iron_horse.py
Process PoolWorker-16:
Traceback (most recent call last):
  File "/Users/andy/Documents/workspace/buildout.python/parts/opt/lib/python2.6/multiprocessing/process.py", line 232, in _bootstrap
    self.run()
  File "/Users/andy/Documents/workspace/buildout.python/parts/opt/lib/python2.6/multiprocessing/process.py", line 88, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/andy/Documents/workspace/buildout.python/parts/opt/lib/python2.6/multiprocessing/pool.py", line 71, in worker
    put((job, i, result))
  File "/Users/andy/Documents/workspace/buildout.python/parts/opt/lib/python2.6/multiprocessing/queues.py", line 366, in put
    return send(obj)
PicklingError: Can't pickle <class 'exceptions.NameError'>: it's not the same object as exceptions.NameError
Traceback (most recent call last):
  File "src/render_nml.py", line 59, in <module>
    main()
  File "src/render_nml.py", line 46, in main
    result = pool.apply_async(render_consist_nml, args=(consist,)).get(timeout=16)
  File "/Users/andy/Documents/workspace/buildout.python/parts/opt/lib/python2.6/multiprocessing/pool.py", line 418, in get
    raise TimeoutError
multiprocessing.TimeoutError