Python: TypeError: set_disabled() takes 1 positional argument?

[team-4480]

Hi! We are running into a problem with our code when we try to run the Pyfrc Sim. I am testing using some switches with DigitalInputs and I was checking for errors since I am out of reach of the robot. Code: http://pastebin.com/Es4z97GK. I get this error when running the sim.

Traceback (most recent call last):
  File "robot.py", line 84, in <module>
    wpilib.run(MyRobot)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/wpilib/_impl/main.py", line 100, in run
    retval = options.cmdobj.run(options, robot_class, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pyfrc/mains/cli_sim.py", line 46, in run
    ui = sim.SimUI(sim_manager, fake_time, field_size, px_per_ft)
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pyfrc/sim/ui.py", line 59, in __init__
    self.timer_fired()
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pyfrc/sim/ui.py", line 329, in timer_fired
    self.update_widgets()
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/pyfrc/sim/ui.py", line 361, in update_widgets
    dio.set_disabled(False)
TypeError: set_disabled() takes 1 positional argument but 2 were given

Any help will be greatly appreciated!!