I downloaded HellowIPCportlet and try to deploy JBOSS portal server 2.4.
It throw me an excpetion says getPortalNode is not a method of JBossRenderRequest, which is true ( at least for the version I used).
I removed this trunk, compile and deploy again, this time I can see two portlets sit side by side in one page, but after I click the submit button.
It throws me an exception again, any advises?

2006-09-19 17:21:31,941 ERROR [org.jboss.portlet.hello.HelloWorldPortletA] The portlet threw an exception
javax.portlet.PortletException: Nothing to invoke
at org.jboss.portlet.JBossPortlet.processView(JBossPortlet.java:231)
at org.jboss.portlet.JBossPortlet.processDispatch(JBossPortlet.java:134)
at org.jboss.portlet.JBossPortlet.processAction(JBossPortlet.java:109)
at org.jboss.portlet.JBossPortlet.processAction(JBossPortlet.java:379)
at org.jboss.portal.portlet.container.PortletContainer.invokeAction(PortletContainer.java:494)
at org.jboss.portal.portlet.container.PortletContainer.dispatch(PortletContainer.java:435)
at org.jboss.portal.portlet.container.PortletContainerInvoker$1.dispatch(PortletContainerInvoker.java:143)
at org.jboss.portal.portlet.invocation.PortletInvocation.dispatch(PortletInvocation.java:242)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:140)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.org$jboss$portal$core$aspects$portlet$TransactionInterceptor$invokeNotSupported$aop(TransactionInterceptor.java:85)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_4827075286966232824.invokeNext(TransactionInterceptor$invokeNotSupported_4827075286966232824.java)
at org.jboss.aspects.tx.TxPolicy.invokeInNoTx(TxPolicy.java:66)
at org.jboss.aspects.tx.TxInterceptor$NotSupported.invoke(TxInterceptor.java:101)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor$invokeNotSupported_4827075286966232824.invokeNext(TransactionInterceptor$invokeNotSupported_4827075286966232824.java)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.invokeNotSupported(TransactionInterceptor.java)
at org.jboss.portal.core.aspects.portlet.TransactionInterceptor.invoke(TransactionInterceptor.java:55)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.core.aspects.portlet.HeaderInterceptor.invoke(HeaderInterceptor.java:50)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ProducerCacheInterceptor.invoke(ProducerCacheInterceptor.java:45)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ModesInterceptor.invoke(ModesInterceptor.java:59)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.WindowStatesInterceptor.invoke(WindowStatesInterceptor.java:55)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.PortletSessionSynchronizationInterceptor.invoke(PortletSessionSynchronizationInterceptor.java:76)
at org.jboss.portal.portlet.invocation.PortletInterceptor.invoke(PortletInterceptor.java:37)
at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:130)
at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor$InvokeNextCommand.execute(ContextDispatcherInterceptor.java:124)
at sun.reflect.GeneratedMethodAccessor334.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.portal.server.servlet.CommandServlet.doGet(CommandServlet.java:104)
at org.jboss.portal.server.servlet.CommandServlet.doPost(CommandServlet.java:161)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:539)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
at org.jboss.portal.portlet.impl.spi.AbstractRequestContext.include(AbstractRequestContext.java:193)
at org.jboss.portal.portlet.aspects.portlet.ContextDispatcherInterceptor$1.include(ContextDispatcherInterceptor.java:68)
at org.jboss.portal.server.servlet.CommandServlet.include(CommandServlet.java:84)
at