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Found a Bug in OpenFire

when trying to delete a Group Chat service then recivig following error:

java.lang.NullPointerException
 at org.jivesoftware.openfire.component.InternalComponentManager.removeComponent(InternalComponentManager.java:190)
 at org.jivesoftware.openfire.muc.MultiUserChatManager.unregisterMultiUserChatService(MultiUserChatManager.java:151)
 at org.jivesoftware.openfire.muc.MultiUserChatManager.removeMultiUserChatService(MultiUserChatManager.java:276)
 at org.jivesoftware.openfire.muc.MultiUserChatManager.removeMultiUserChatService(MultiUserChatManager.java:261)
 at org.jivesoftware.openfire.admin.muc_002dservice_002ddelete_jsp._jspService(muc_002dservice_002ddelete_jsp.java:95)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
 at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
 at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
 at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
 at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
 at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:66)
 at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:42)
 at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:70)
 at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:146)
 at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
 at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
 at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
 at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
 at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
 at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
 at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
 at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
 at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
 at org.mortbay.jetty.Server.handle(Server.java:324)
 at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
 at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
 at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
 at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
 at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
 at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
 at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

Please find a solution as fast as possible