This App uses Celery, and needs some Celery-specific configuration:

Add 'djcelery' and 'kombu.transport.django' to INSTALLED_APPS.

In settings.py, add:

import djcelery djcelery.setup_loader()

BROKER_URL = 'django://'

Then run bin/django syncdb, bin/django migrate.

(this assumes you want to use Django's database as Celery message broker. If you use something else, like RabbitMQ, kombu isn't needed and you need different settings).

Note: we do locking for Celery tasks using the cache; that means that all instances of the site that uses this should use a single cache (e.g. a shared memcached).