@jbardi - hey, that “i” is much easier than looking at the log directly, hehe. This is my only automation and I did have a bootstrap error!
16-08-29 08:42:18 homeassistant.bootstrap: Invalid config for [automation]: expected str for dictionary value @ data['trigger'][0]['state']. Got None (See /home/hass/.homeassistant/configuration.yaml:92)
I searched for this and read in other topics that I need single quotes on the states. Here is my corrected, working configuration:
shell_command: play_sound: sudo /usr/bin/omxplayer /usr/share/scratch/Media/Sounds/Instruments/Trumpet2.wav
automation: alias: 'Play Audio File' trigger: platform: state entity_id: binary_sensor.aeotec_dsb29_doorwindow_sensor_2nd_edition_sensor_3 state: 'on' action: service: shell_command.play_sound
SOLVED! Thanks everybody