[Homematic] NPE when initiating connection to CCU2

After adding a CCU2 as a Homematic bridge, I found this in my log:

17:02:41.787 [INFO ] [smarthome.event.ThingAddedEvent     ] - Thing 'homematic:bridge:ccu2' has been added.
17:02:41.805 [INFO ] [me.event.ThingStatusInfoChangedEvent] - 'homematic:bridge:ccu2' changed from UNINITIALIZED to INITIALIZING
17:02:42.214 [INFO ] [ternal.communicator.client.RpcClient] - Interface 'WIRED' on gateway 'ccu2' not available, disabling support
17:02:42.231 [INFO ] [ternal.communicator.client.RpcClient] - Interface 'HMIP' on gateway 'ccu2' not available, disabling support
17:02:42.233 [INFO ] [ternal.communicator.client.RpcClient] - Interface 'CUXD' on gateway 'ccu2' not available, disabling support
17:02:42.332 [INFO ] [ternal.communicator.HomematicGateway] - HmGatewayInfo[id=CCU,type=CCU2,firmware=2.3.11,address=JEQ0739206,wired=false,hmip=false,cuxd=false]
17:02:42.333 [INFO ] [ternal.communicator.HomematicGateway] - Used Homematic transfer modes: RF:BIN_RPC
17:02:43.210 [ERROR] [very.HomematicDeviceDiscoveryService] - 
java.lang.ExceptionInInitializerError
        at org.openhab.binding.homematic.type.HomematicTypeGeneratorImpl.createChannelType(HomematicTypeGeneratorImpl.java:228)[230:org.openhab.binding.homematic:2.0.0.201611270958]
'org.apache.felix.eventadmin.impl.adapter.LogEventAdapter$1@3908a247' is removed as a LogListener, since it threw an exception. at org.openhab.binding.homematic.type.HomematicTypeGeneratorImpl.generate(HomematicTypeGeneratorImpl.java:128)[230:org.openhab.
binding.homematic:2.0.0.201611270958]
        at org.openhab.binding.homematic.handler.HomematicBridgeHandler.onDeviceLoaded(HomematicBridgeHandler.java:283)[230:org.openhab.binding.homematic:2.0.0.201611270958]
        at org.openhab.binding.homematic.internal.communicator.AbstractHomematicGateway.loadAllDeviceMetadata(AbstractHomematicGateway.java:400)[230:org.openhab.binding.homematic:2.0.0.201611270958]
        at org.openhab.binding.homematic.discovery.HomematicDeviceDiscoveryService$1.run(HomematicDeviceDiscoveryService.java:108)[230:org.openhab.binding.homematic:2.0.0.201611270958]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_101]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_101]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)[:1.8.0_101]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)[:1.8.0_101]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_101]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_101]
        at java.lang.Thread.run(Thread.java:745)[:1.8.0_101]
Caused by: java.lang.NullPointerException
        at java.io.Reader.<init>(Reader.java:78)[:1.8.0_101]
        at java.io.InputStreamReader.<init>(InputStreamReader.java:72)[:1.8.0_101]
        at org.openhab.binding.homematic.type.MetadataUtils.loadStandardDatapoints(MetadataUtils.java:71)[230:org.openhab.binding.homematic:2.0.0.201611270958]
        at org.openhab.binding.homematic.type.MetadataUtils.<clinit>(MetadataUtils.java:52)[230:org.openhab.binding.homematic:2.0.0.201611270958]
        ... 12 more
17:02:43.216 [INFO ] [me.event.ThingStatusInfoChangedEvent] - 'homematic:bridge:ccu2' changed from INITIALIZING to ONLINE

@gerrieg Is this anything known?

[gerrieg]

@ooswald In the new 2.27.7 firmware, eq-3 changed some security things. The binding can not connect to the CCU on port 8181. Check the firewall settings in the CCU and set the Remote HomeMatic-Script API and/or HomeMatic XML-RPC API to full access.

[MHerbst]

I think your problem has nothing to do with this issue. It has probably the same cause as #2543 (where you already added a comment).