For Django 1.6: new test discovery plus reverse now does urlquote(). My base64 keys were padded with '=' and these got quoted when doing a reverse to generate the URL. So changed the test to look for a quoted version of the key. This will change the URLs sent to users, but I believe it will all be taken care of by Django.

#!/usr/bin/env python
import os
import sys

if __name__ == "__main__":
    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "madeira.settings")

    from django.core.management import execute_from_command_line

    execute_from_command_line(sys.argv)