I get this error trying to install as a service on OS X El Capitan when running the following command:
~/Library/Application\ Support/ChannelsDVR/install.sh --system
ERROR: Channels DVR is already installed as a user-service.
ERROR: Uninstall it before installing as system-wide service.
How do I uninstall as a user-service and make sure not to lose my configuration and DVR'd shows?