python - Safetkinter RuntimeError: Recursion Limit

Question

So I've been trying to get a threadsafe adapter for tkinter (I'm using Python 3.3) to help with some of my projects. I stumbled upon a recipe called "safetkinter" (recipe 578153), which promises to route all gui calls to the main thread. I tried it out, but I am having problems with a RuntimeError that keeps sticking its head up and ruining my endeavors. I've tried various ways of fixing it with no luck. So... Does anyone here know the trick to getting this to work? (also, safetkinter makes use of the threadbox recipe, and the affinity recipe by dependence. I also believe that the affinity module is the culprit of this problem.)

The script I was using to test the module:

import safetkinter as tkinter

class Main(tkinter.Tk):
    def __init__(self):
        self._setup()
        self.mainloop()

    def _setup(self):
        tkinter.Button(self, text='Push me!').pack()

if __name__ == '__main__':
    Main()

Also, here is a link to the exception traceback taken from the console: Traceback