java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup)

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java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThreadGroup)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at com.google.apphosting.utils.security.SecurityManagerInstaller$CustomSecurityManager.checkAccess(SecurityManagerInstaller.java:72)
at java.lang.ThreadGroup.checkAccess(Unknown Source)
at java.lang.Thread.init(Unknown Source)
at java.lang.Thread.(Unknown Source)
at com.icesoft.faces.webapp.http.servlet.SessionDispatcher$Listener$1.(SessionDispatcher.java:216)
at com.icesoft.faces.webapp.http.servlet.SessionDispatcher$Listener.contextInitialized(SessionDispatcher.java:215)
at com.icesoft.faces.util.event.servlet.ContextEventRepeater.contextInitialized(ContextEventRepeater.java:204)
at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:530)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:135)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1218)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:500)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:40)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:190)
at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:167)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:113)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:4547)
at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:359)
at com.google.net.rpc.impl.Server$2.run(Server.java:792)
at com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56)
at com.google.net.rpc.impl.Server.startRpc(Server.java:748)
at com.google.net.rpc.impl.Server.processRequest(Server.java:340)
at com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:422)
at com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319)
at com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:419)
at com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:733)
at com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:101)
at com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:249)
at java.lang.Thread.run(Unknown Source)

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