Pulp issue on capsule/smart proxy

For some reason pulp/celery keeps failing/stopping, resulting in the proxy
being unable to pull down content (operating systems), so it can't get the
vmlinuz and initrd for kickstarting/pxe.

Also seeing this in my /var/log/messages

NotFound: no such queue: pulp.task

Just started happening, as I've just installed this capsule. I've tried
restarting pulp/etc, but to no avail.