[jboss-user] [JBoss Portal] - Exception - No null layout allowed here

Hi all, I am getting an exception java.lang.IllegalArgumentException: No null layout allowed here I had been going through the forum for this exception but every one says that its related to MySQL5 Data Truncation Error. But its not being handy to me. My Envi: Portal:2.6.1, AS: 4.2.1, DB: Oracle, CMS: Alfresco, OS : XP. The full stack trace is | java.lang.IllegalArgumentException: No null layout allowed here | at org.jboss.portal.theme.LayoutDispatcher.<init>(LayoutDispatcher.java:78) | at org.jboss.portal.theme.impl.JSPLayout.render(JSPLayout.java:161) | at org.jboss.portal.theme.render.RendererContext.render(RendererContext.java:219) | at org.jboss.portal.theme.impl.JSPRendererContext.render(JSPRendererContext.java:66) | at org.jboss.portal.core.theme.PageRendition.render(PageRendition.java:93) | at org.jboss.portal.core.model.portal.PortalObjectResponseHandler$1.sendResponse(PortalObjectResponseHandler.java:87) | | at org.jboss.portal.core.controller.Controller.sendResponse(Controller.java:329) | at org.jboss.portal.core.controller.Controller.processHandlerResponse(Controller.java:313) | at org.jboss.portal.core.controller.Controller.processCommandResponse(Controller.java:293) | at org.jboss.portal.core.controller.Controller.processCommand(Controller.java:267) | at org.jboss.portal.core.controller.Controller.handle(Controller.java:226) | at org.jboss.portal.server.RequestControllerDispatcher.invoke(RequestControllerDispatcher.java:51) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:131) | at org.jboss.portal.core.cms.aspect.IdentityBindingInterceptor.invoke(IdentityBindingInterceptor.java:47) | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.server.aspects.server.ContentTypeInterceptor.invoke(ContentTypeInterceptor.java:68) | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.core.aspects.server.LocaleInterceptor.invoke(LocaleInterceptor.java:96) | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.core.aspects.server.UserInterceptor.invoke(UserInterceptor.java:245) | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.server.aspects.server.SessionInvalidatorInterceptor.invoke(SessionInvalidatorInterceptor.java:84) | | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.core.impl.api.user.UserEventBridgeTriggerInterceptor.invoke(UserEventBridgeTriggerInterceptor.jav | a:65) | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.core.aspects.server.TransactionInterceptor.org$jboss$portal$core$aspects$server$TransactionInterc | eptor$invoke$aop(TransactionInterceptor.java:49) | at org.jboss.portal.core.aspects.server.TransactionInterceptor$invoke_N5143606530999904530.invokeNext(TransactionInte | rceptor$invoke_N5143606530999904530.java) | at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) | at org.jboss.aspects.tx.TxInterceptor$RequiresNew.invoke(TxInterceptor.java:253) | at org.jboss.portal.core.aspects.server.TransactionInterceptor$invoke_N5143606530999904530.invokeNext(TransactionInte | rceptor$invoke_N5143606530999904530.java) | at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) | at org.jboss.aspects.tx.TxInterceptor$RequiresNew.invoke(TxInterceptor.java:262) | at org.jboss.portal.core.aspects.server.TransactionInterceptor$invoke_N5143606530999904530.invokeNext(TransactionInte | rceptor$invoke_N5143606530999904530.java) | at org.jboss.portal.core.aspects.server.TransactionInterceptor.invoke(TransactionInterceptor.java) | at org.jboss.portal.server.ServerInterceptor.invoke(ServerInterceptor.java:38) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.server.aspects.LockInterceptor$InternalLock.invoke(LockInterceptor.java:70) | at org.jboss.portal.server.aspects.LockInterceptor.invoke(LockInterceptor.java:131) | at org.jboss.portal.common.invocation.Invocation.invokeNext(Invocation.java:115) | at org.jboss.portal.common.invocation.Invocation.invoke(Invocation.java:157) | at org.jboss.portal.server.servlet.PortalServlet.service(PortalServlet.java:380) | at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) | at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) | at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) | at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) | at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) | at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580) | at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) | at java.lang.Thread.run(Thread.java:595) Some one please help. 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