Traceback (most recent call last):
  File ".././view_plot.py", line 124, in <module>
    status = main()
  File ".././view_plot.py", line 81, in main
    ax = pickle.load(file(args.plot))
  File "/usr/lib/python2.7/pickle.py", line 1378, in load
    return Unpickler(file).load()
  File "/usr/lib/python2.7/pickle.py", line 858, in load
    dispatch[key](self)
  File "/usr/lib/python2.7/pickle.py", line 1090, in load_global
    klass = self.find_class(module, name)
  File "/usr/lib/python2.7/pickle.py", line 1126, in find_class
    klass = getattr(mod, name)
AttributeError: 'module' object has no attribute '_PicklableSubplotClassConstructor'