** to fix, add <pre>-XstartOnFirstThread -Djava.awt.headless=true</pre> to the VM arguments of the launch
* to show "configuration->items" in PaperUI, you need to switch from "simple" to "advanced" mode. Go to Configuration->System->Item Linking and deactivate the "Simple Mode". You will then have a new entry Configuration->Items which will show you all your items (also the ones from the files, but note that these are read-only).
* if '''the mqtt broker binding doesn't start''', and the log shows two entries for mqtt brokers, check ''/var/lib/openhab2/config/org/openhab/mqtt.config'' for double entries (or other files that configure another broker in that directory), and remove those files* if '''there are no channels created for a binding''', then make sure the binding didn't fail with an earlier instance which is still present in the system. Delete the bindings "Thing" and re-add, thi should make things work.
== 5 inch touch screen ==