hz shutdown exception

09 Feb 2012 10:40:35.105    INFO    com.hazelcast.impl.LifecycleServiceImpl /172.16.167.1:5702 [hazelblast-cjf] Address[172.16.167.1:5702] is SHUTTING_DOWN
09 Feb 2012 10:40:35.106    INFO    com.hazelcast.impl.Node /172.16.167.1:5702 [hazelblast-cjf] ** we are being asked to shutdown when active = true
09 Feb 2012 10:40:35.145    INFO    com.hazelcast.nio.InSelector    /172.16.167.1:5702 [hazelblast-cjf] closing selector hz.1.InThread
09 Feb 2012 10:40:35.145    INFO    com.hazelcast.nio.OutSelector   /172.16.167.1:5702 [hazelblast-cjf] closing selector hz.1.OutThread
09 Feb 2012 10:40:35.251    INFO    com.hazelcast.nio.Connection    /172.16.167.1:5702 [hazelblast-cjf] Connection lost null
09 Feb 2012 10:40:35.254    INFO    com.hazelcast.impl.Node /172.16.167.1:5702 [hazelblast-cjf] Hazelcast Shutdown is completed in 147 ms.
09 Feb 2012 10:40:35.257    INFO    hz.ManagementCenter Error unregistering MBeans
javax.management.RuntimeMBeanException: RuntimeException thrown in preDeregister method
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.preDeregisterInvoke(DefaultMBeanServerInterceptor.java:1050)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.exclusiveUnregisterMBean(DefaultMBeanServerInterceptor.java:421)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.unregisterMBean(DefaultMBeanServerInterceptor.java:403)
    at com.sun.jmx.mbeanserver.JmxMBeanServer.unregisterMBean(JmxMBeanServer.java:506)
    at com.hazelcast.jmx.ManagementService.shutdown(ManagementService.java:167)
    at com.hazelcast.impl.FactoryImpl.shutdownManagementService(FactoryImpl.java:317)
    at com.hazelcast.impl.FactoryImpl.shutdown(FactoryImpl.java:312)
    at com.hazelcast.impl.LifecycleServiceImpl.shutdown(LifecycleServiceImpl.java:105)
    at com.hazelcast.core.LifecycleService$shutdown.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
    at net.friedline.hazelblast.main.HazelBlast.shutdown(HazelBlast.groovy:322)
    at net.friedline.hazelblast.main.HazelBlast.run(HazelBlast.groovy:98)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSite.invoke(PogoMetaMethodSite.java:226)
    at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.call(PogoMetaMethodSite.java:64)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
    at net.friedline.hazelblast.main.HazelBlast.main(HazelBlast.groovy:68)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.IllegalStateException: Hazelcast Instance is not active!
    at com.hazelcast.impl.FactoryImpl.initialChecks(FactoryImpl.java:658)
    at com.hazelcast.impl.FactoryImpl$CollectionProxyImpl.ensure(FactoryImpl.java:2101)
    at com.hazelcast.impl.FactoryImpl$CollectionProxyImpl.removeItemListener(FactoryImpl.java:2201)
    at com.hazelcast.jmx.SetMBean.preDeregister(SetMBean.java:83)
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.preDeregisterInvoke(DefaultMBeanServerInterceptor.java:1048)
    ... 28 more
09 Feb 2012 10:40:35.260    INFO    com.hazelcast.impl.LifecycleServiceImpl /172.16.167.1:5702 [hazelblast-cjf] Address[172.16.167.1:5702] is SHUTDOWN