What version of Domoticz are you using?
I am running the latest stable version without issues on the device sharing subject.

Here is a user having trouble using beta v3.8755: viewtopic.php?t=21142

I am running roughly the same setup as you do and it is working without any problems. Master: RPi 3 with Domoticz v3.8153 in the meter cabinet Slave: RPi (first version) with Domoticz v3.8153 in the attic next to te boiler. This one has the OTGW connected to it through USB. Have you read the article ...

I found it. My mistake, again

Only the subdirectory pytradfri inside the directory pytradfri on git by ggravlingen needs to be in ../domoticz/plugins/IKEA-tradfri/
It's working now.

Thanks for the support.

Hi Moroen, Thanks for the reply. I guess I misread point 4 of your installation instruction. I did ../domoticz/plugins/pytradfri instead of ../domoticz/plugins/IKEA-tradfri/pytradfri. I moved pytradfri to the correct location and restarted Domoticz resulting in a new error message in the log. 2017 ...

Hi Moroen, I own a Tradfri hub, a remote and three E27 WS opal 980lm bulbs, so I thought I'd give your plugin a try. The Tradfri stuff is running fine on its own. I am using an RPi B+ with Jessie and Domoticz 3.7431 beta. I followed your instructions. After restarting Domoticz the IKEA Tradfri entry ...

You don't need a fresh Domoticz image. The step sudo rsync -axv / /mnt in the procedure creates a mirror of the current situation of your SD card.
I would stop the domoticz service before running that command, though.

There is a third option to protect the SD card: https://www.raspberrypi.org/forums/view ... 29&t=44177
I use this on all three of my rpi's (2x Domoticz, 1x OSMC).