I’m Sergio from Argentina, a newbie with Openhab2 (but not with OH1.x).
I did use Openhab 1.8 running over raspbian into a PI3, working with serial binding and RS485 USB adapter and all works fine.
When I decide to migrate to Openhab 2.1.0 the problem did appear.
OH2.1.0 installation went very hard but it is installed and working.
My problem now are the binding installation, when I go to PaperUI->Add-ons and try to install serial binding the wheel is spinning forever until I go to other menu, next when I back to Add-ons it appear installed but not appear into the inbox.
How can I solve this problem?. I think wich OH2.1.0 is unstable version yet.
I hope your help!