Zwave issues since last upgrade


I just updated / upgraded by apt-get yesterday and ran into problems with zwave.
(Raspi 2 B with Openhabian and openHAB 2.0 Build #578 - offline)
I did switch on the UI (safari using basic UI) which used to work properly.
Since yesterday I get:

2016-11-11 15:33:27.637 [WARN ] [ding.zwave.handler.ZWaveThingHandler] - NODE 4: No converter set for command zwave:device:49ede2f3:node4:switch_binary type OnOffType

And even if in events.log the zwave switch is ON and the other parameters are > 0 as well (Power consumption), the UI is not updated to ON anymore)

Does someone experience this as well?