Harmony Hub not finding devices

I have done a fresh install of Beta 3 and installed the
Harmony Hub Binding
binding-harmonyhub - 2.0.0.b3

When trying to find Harmony hubs it does not find anything.

I get this exception in the logException in thread “Thread-42” java.lang.NullPointerException
at org.openhab.binding.harmonyhub.discovery.HarmonyHubDiscovery$HarmonyServer.run(HarmonyHubDiscovery.java:250)

Any ideas how to fix this.

I am looking to migrate form 1.8x and this is one of the key bindings I need working.

This install is on a fresh wheezy image on a raspberry pi 2.