Thank you, I checked the service file and didn't see anything different about it but deleting and recreating it worked.

Were you able to get systemd working? After updating from Ubuntu 14 to 15 I got the same errors trying to run it with upstart. I tried migrating to systemd using the provided guide: http://dev.deluge-torrent.org/wiki/UserGuide/Service/systemd. However, deluge still will not start. :/etc/systemd/syst...