Walking through matplotlib\'s animation example on my Mac OSX machine - http://matplotlib.org/examples/animation/simple_anim.html - I am getting this error:-
Just set
blit=False
when animation.FuncAnimation() is called and it will work.
For instance (from double_pendulum_animated):
ani = animation.FuncAnimation(fig, animate, np.arange(1, len(y)), interval=25, blit=False, init_func=init)