Exception during change configuration of Wall Controller WALLC-S

Hello all together,
i get an exception when i try to change the configuration of my Z-WAVE-Me Wall Controller WALLC-S (Node 16)
Currently i use openHAB 2.3.0-1 (Release Build) with Raspberry 3 an Razberry 2.

Situation.
First --> I try to change the action for group 3 from 'central scene to gateway to ‘Switch ON/OFF only…’
there i get Exception below (trying with paper-UI and HABMin; after reboot…)
Second --> I try to associate Group 3 to a FIBARO Switch 2. I don’t want to use a rule to controll the Fibaro Switch.
As you see in my current configuration (Screenshot) i did both already for Group 1 (with many trys it works, i do not know how i got this to work!!!).

As i see in the forum a lot of people use the standard configuration and create rules. As i say i would like to use a direct association from Wall Controller to the switch.

Any ideas? It seems to be an openhab internal problem with the database based configuration for items or?

Thank you very much

2018-07-01 16:54:12.588 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Configuration update received

2018-07-01 16:54:12.594 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Configuration update config_30_1 to 1

2018-07-01 16:54:12.597 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Error getting configurationCommandClass

2018-07-01 16:54:12.601 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Configuration update config_21_1 to 1

2018-07-01 16:54:12.605 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Error getting configurationCommandClass

2018-07-01 16:54:12.609 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Configuration update config_22_1 to 0

2018-07-01 16:54:12.611 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Error getting configurationCommandClass

2018-07-01 16:54:12.613 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Configuration update config_11_1 to 2

2018-07-01 16:54:12.617 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Error getting configurationCommandClass

2018-07-01 16:54:12.621 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 16: Configuration update group_5 to null

2018-07-01 16:54:12.626 [ERROR] [st.core.internal.thing.ThingResource] - Exception during HTTP PUT request for update config at 'things/zwave:device:4f63431d:node16/config'

java.lang.NullPointerException: null

	at org.openhab.binding.zwave.handler.ZWaveThingHandler.handleConfigurationUpdate(ZWaveThingHandler.java:623) [202:org.openhab.binding.zwave:2.3.0]

	at org.eclipse.smarthome.core.thing.internal.ThingRegistryImpl.updateConfiguration(ThingRegistryImpl.java:92) [108:org.eclipse.smarthome.core.thing:0.10.0.oh230]

	at org.eclipse.smarthome.io.rest.core.internal.thing.ThingResource.updateConfiguration(ThingResource.java:425) [118:org.eclipse.smarthome.io.rest.core:0.10.0.oh230]

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]

	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]

	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [169:org.glassfish.jersey.core.jersey-common:2.22.2]

	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [169:org.glassfish.jersey.core.jersey-common:2.22.2]

	at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [169:org.glassfish.jersey.core.jersey-common:2.22.2]

	at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [169:org.glassfish.jersey.core.jersey-common:2.22.2]

	at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [169:org.glassfish.jersey.core.jersey-common:2.22.2]

	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [169:org.glassfish.jersey.core.jersey-common:2.22.2]

	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [170:org.glassfish.jersey.core.jersey-server:2.22.2]

	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]

	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]

	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]

	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]

	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) [167:org.glassfish.jersey.containers.jersey-container-servlet-core:2.22.2]

	at com.eclipsesource.jaxrs.publisher.internal.ServletContainerBridge.service(ServletContainerBridge.java:76) [15:com.eclipsesource.jaxrs.publisher:5.3.1.201602281253]

	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]

	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]

	at org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]

	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) [82:org.eclipse.jetty.security:9.3.21.v20170918]

	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.ops4j.pax.web.service.jetty.internal.HttpServiceContext.doHandle(HttpServiceContext.java:284) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]

	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) [85:org.eclipse.jetty.servlet:9.3.21.v20170918]

	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.ops4j.pax.web.service.jetty.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:80) [183:org.ops4j.pax.web.pax-web-jetty:6.0.9]

	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.server.Server.handle(Server.java:534) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:333) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [84:org.eclipse.jetty.server:9.3.21.v20170918]

	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283) [76:org.eclipse.jetty.io:9.3.21.v20170918]

	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108) [76:org.eclipse.jetty.io:9.3.21.v20170918]

	at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [76:org.eclipse.jetty.io:9.3.21.v20170918]

	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [87:org.eclipse.jetty.util:9.3.21.v20170918]

	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [87:org.eclipse.jetty.util:9.3.21.v20170918]

	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [87:org.eclipse.jetty.util:9.3.21.v20170918]

	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [87:org.eclipse.jetty.util:9.3.21.v20170918]

	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [87:org.eclipse.jetty.util:9.3.21.v20170918]

	at java.lang.Thread.run(Thread.java:748) [?:?]