blank conf

after update to lastest /etc/init/mythtv-backend.conf went blank and mythtv started to [ 340.268761] init: mythtv-backend main process ended, respawning [ 367.245595] init: mythtv-backend main process ended, respawning [ 398.055157] init: mythtv-backend respawning too fast, stopped [ 429.323652] init: mythtv-backend main process ended, respawning [ 460.215245] init: mythtv-backend main process ended, respawning