In the admin-console, executing start/restart for Modeshape Engine produces NPE in Log

10:47:05,013 ERROR [modeshape] Exception in getAvailability
java.lang.NullPointerException
	at org.modeshape.rhq.plugin.util.ModeShapeManagementView.executeManagedOperation(ModeShapeManagementView.java:188)
	at org.modeshape.rhq.plugin.EngineComponent.getAvailability(EngineComponent.java:70)
	at sun.reflect.GeneratedMethodAccessor528.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)