Z-Stick not working after openHAB2 update

Hi all,
I have opehabian running on an RP3 with a Aeon Z-Stick Gen5 and one Mutlisensor 6.
This was working fine and turned on some hue lights on movement.

After updating I get the following error in the Paper UI

Status: OFFLINE - COMMUNICATION_ERROR Serial Error: Port /dev/ttyACM0 does not exist

Startup Error:

an 06 07:38:37 geosmart systemd[1]: Starting openHAB 2 - empowering the smart home...
Jan 06 07:38:37 geosmart systemd[1]: Started openHAB 2 - empowering the smart home.
Jan 06 07:38:37 geosmart start.sh[27913]: Launching the openHAB runtime...
Jan 06 07:39:11 geosmart start.sh[27913]: java.lang.UnsatisfiedLinkError: gnu.io.RXTXCommDriver.nativeGetVersion()Ljava/lang/String; thrown while loading gnu.io.RXTXCommDriver
Jan 06 07:39:11 geosmart start.sh[27913]: java.lang.NoClassDefFoundError: Could not initialize class gnu.io.RXTXCommDriver thrown while loading gnu.io.RXTXCommDriver

What I did already:
uninstall / install bindings
reconfirming /dev/ttyACM0 is correct
adding -Dgnu.io.rxtx.SerialPorts=/dev/ttyACM0
resetting controller

then found the above messages - java.lang.NoClassDefFoundError

Any ideas?

To which version did you updated? There were some issues regarding offline controller. This was caused by an updated serial library. They reverted it some builds later. See:

Some people reported that the installation of liblockdev1 and liblockdev1-dev packages solved the issue. But some also weren’t successful.

yes youre right after updating again - zwave stick is back online