This did not work out (chmod 755 /etc/init/apps/n9-button-monitor.conf)! The strange thing is that "source /etc/profile; PATH=$PATH:/usr/local/bin; develsh -c n9-button-monitor" works out just fine in the terminal, it does exactly what it's supposed to. So what's up with autostart? Extremely useful script though! I love the way I can just pull up the phone and hold one button to get a flashlight!