Zigbee stick: port /dev/ttyACM0 does not exist

[Kim_Andersen]

Raspberry Pi - Make serial USB ports persistent via symlinks

Usually, USB sticks attached to Raspberry Pi will get assigned ports in an increasing manner such as /dev/ttyACM0, /dev/ttyACM1, etc. This may become a problem whenever you reattach your USB devices to a different port, you add new devices, or you simply reboot your RPi. The reason is that one specified device may be recognized earlier than another while booting the RPi. You could make these ports permanent via so called symlinks and give them more telling names in contrast to ttyACM0. SSH i…

But I honestly doubt this will change anything. If you´re using openhabian the ACM0 should be there. Give it a try anyway.