I have a portal with tabbed panes and when I put all my portlets on their own panes, 
it all works fine.  When I try to combine portlet functionality by creating a tab or 
menu layout on the pane of one of the outer tab, such that 3 of the original portlets 
are nested under one of the outer tabs, it seems to work until I navigate to another 
outer tab and then come back to the outer tab that contains the nested menus (or 
tabs).  At that point, regardless of which portlet's menu/tab is selected, the browser 
displays the exception shown below. The nested menus/tabs and the active portlet 
display properly under the exception stack trace. Can anyone help me fix this?

Error encountered processing a template: 
/navigations//html/top_loggedIn.jsporg.apache.jasper.JasperException at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254) at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) at 
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) 
at 
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:575)
 at 
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:498) 
at 
org.apache.turbine.services.jsp.TurbineJspService.handleRequest(TurbineJspService.java:202)
 at 
org.apache.turbine.services.jsp.TurbineJspService.handleRequest(TurbineJspService.java:163)
 at 
org.apache.turbine.modules.navigations.BaseJspNavigation.buildTemplate(BaseJspNavigation.java:91)
 at 
org.apache.turbine.modules.navigations.TemplateNavigation.doBuild(TemplateNavigation.java:103)
 at org.apache.turbine.modules.Navigation.build(Navigation.java:98) at 
org.apache.turbine.modules.NavigationLoader.eval(NavigationLoader.java:129) at 
org.apache.turbine.modules.NavigationLoader.exec(NavigationLoader.java:142) at 
org.apache.jetspeed.services.jsp.tags.NavigationTag.doStartTag(NavigationTag.java:134) 
at org.apache.jsp.default_jsp._jspx_meth_jetspeed_navigation_0(default_jsp.java:164) 
at org.apache.jsp.default_jsp._jspService(default_jsp.java:87) at 
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:210) at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) at 
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684) 
at 
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:575)
 at 
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:498) 
at 
org.apache.turbine.services.jsp.TurbineJspService.handleRequest(TurbineJspService.java:202)
 at 
org.apache.jetspeed.modules.layouts.JetspeedJspLayout.doBuild(JetspeedJspLayout.java:115)
 at org.apache.turbine.modules.Layout.build(Layout.java:91) at 
org.apache.turbine.modules.LayoutLoader.exec(LayoutLoader.java:123) at 
org.apache.turbine.modules.pages.DefaultPage.doBuild(DefaultPage.java:169) at 
org.apache.turbine.modules.Page.build(Page.java:90) at 
org.apache.turbine.modules.PageLoader.exec(PageLoader.java:123) at 
org.apache.turbine.Turbine.doGet(Turbine.java:563) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at 
com.troux.tip.servlet.TIPServlet.service(Unknown Source) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
 at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
 at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at 
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415) at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at 
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171) 
at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:509) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:356) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174) at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at 
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) at 
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:261) at 
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360) at 
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:604) at 
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:562) at 
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:679) at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619) at 
java.lang.Thread.run(Thread.java:534) Error processing navigation template: 
top_loggedIn.jsp using module: BaseJspNavigation 

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