I don't know. I don't think it is that. It might just be that running a long task like that is inappropriate for Celery. Maybe I should just run it without Celery, with a loop to check if we've asked it not to run anymore, and Celery Beat to start and restart it if it stops.
StoreSCP from web interface no longer starts a celery task. Starts and stops successfully from the web interface. TODO: command line start and rethink logging. Refs #328