try the following:
- create /public/OpenHAB/configurations and /volume1/OpenHAB/addons
- install the spk you mentioned
- install the OpenHAB demo spk from the communities (this will help fix some permission issues and install 1.5 config and addons) if you dont have any skip this… or you can do manually if you know how to do it
- replace config and addons with the version you want (e.g 1.8)
- OpenHAB demo can be removed.
- vi /var/packages/OpenHAB/start-stop-status.sh and change /Timezone/tzname to tzlist (tzname not used in DSM5.2) it will fix the timezone…only if you have any problem on your logs timestamps etc
hope it helps.