PubSubEngine NullPointerException on shutdown

After sending a presence subscription packet to a logged in user and then checking that user’s availability, I stop Openfire reflectively and get the following NullPointerException:

java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.teamphone.openfireplugin.StopOpenfireMojo.execute(StopOpenfireMojo.java:38)

at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPlugi nManager.java:101)

at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)

at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)

at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)

at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(Lifecyc leModuleBuilder.java:84)

at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(Lifecyc leModuleBuilder.java:59)

at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(Lifecy cleStarter.java:183)

at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.j ava:161)

at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)

at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)

at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)

at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)

at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.ja va:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java: 290)

at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)

at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.jav a:409)

at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)

Caused by: java.lang.NullPointerException

at org.jivesoftware.openfire.pubsub.PubSubEngine.shutdown(PubSubEngine.java:1736)

at org.jivesoftware.openfire.pep.PEPServiceManager.stop(PEPServiceManager.java:208 )

at org.jivesoftware.openfire.pep.IQPEPHandler.stop(IQPEPHandler.java:214)

at org.jivesoftware.openfire.XMPPServer.shutdownServer(XMPPServer.java:948)

at org.jivesoftware.openfire.XMPPServer.stop(XMPPServer.java:709)

… 26 more

Experiencing similar problem. Running under Windows 7 as a service. Has someone any idea how to fix this?