Here's the log entries:
[2015-05-14 21:03:18.382] [INFO] sphere-director driver-go-zigbee - 2015/05/14 21:03:18 notifying bugsnag: [Gateway EOF]: Error reading socket %!s(MISSING)
[2015-05-14 21:03:18.609] [INFO] sphere-director Director - Module driver-go-zigbee was terminated unexpectedly. pid: 11107
[2015-05-14 21:03:18.628] [INFO] sphere-director Director - Module driver-go-zigbee has died 3 times. Delaying restart by 0 ms
[2015-05-14 21:03:18.693] [INFO] sphere-director Director - Starting driver-go-zigbee Attempt 4 since it was first started 6 days, 20 hours, 58 seconds, 934 milliseconds ago
[2015-05-14 21:03:18.752] [INFO] sphere-director Director - Starting driver-go-zigbee version 0.1.6 from path /opt/ninjablocks/drivers/driver-go-zigbee
[2015-05-14 21:03:18.756] [INFO] sphere-director Director - Maximum memory for driver-go-zigbee is 20mb