I am trying to start a new nested conversation using | <s:link view="/a.xhtml" propagation="nest" value="Go to A"/> | but I am getting an exception (see below). But the exception disappears if I start a nested conversation in an action method. So, it'll work if I re-write with the following: | <s:link view="/a.xhtml" action="#{actionClass.prepare}" value="Go to A"/> | | @Name("actionClass") | public class ActionClass { | | @Begin(nested = true) | public void prepare() {} | | } | I am using Seam 1.1GA. Also assume that a long running conversation already exists at the time of invocation. Does anyone know why this is happening? Here's the exception: | 10:58:26,053 [http-8080-Processor24] ERROR PhaseListenerManager:91 - Exception in PhaseListener RESTORE_VIEW(1) afterPhase | java.lang.NullPointerException | at org.jboss.seam.core.ConversationEntry.<init>(ConversationEntry.java:50) | at org.jboss.seam.core.ConversationEntries.createConversationEntry(ConversationEntries.java:53) | at org.jboss.seam.core.Manager.createConversationEntry(Manager.java:636) | at org.jboss.seam.core.Manager.beginNestedConversation(Manager.java:681) | at org.jboss.seam.core.Manager.handleConversationPropagation(Manager.java:500) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.afterRestoreView(AbstractSeamPhaseListener.java:61) | at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:73) | at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89) | at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:181) | at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:181) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:75) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:213) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) | at java.lang.Thread.run(Thread.java:619) | 10:58:26,303 [http-8080-Processor24] ERROR PhaseListenerManager:91 - Exception in PhaseListener RENDER_RESPONSE(6) afterPhase | java.lang.NullPointerException | at org.jboss.seam.core.Manager.unlockConversation(Manager.java:363) | at org.jboss.seam.contexts.Lifecycle.flushAndDestroyContexts(Lifecycle.java:354) | at org.jboss.seam.contexts.Lifecycle.endRequest(Lifecycle.java:248) | at org.jboss.seam.jsf.AbstractSeamPhaseListener.afterRender(AbstractSeamPhaseListener.java:232) | at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:89) | at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89) | at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:391) | at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:181) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:75) | at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:213) | at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) | at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) | at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) | at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) | at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) | at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) | at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) | at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) | at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) | at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) | at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) | at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) | at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) | at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) | at java.lang.Thread.run(Thread.java:619) | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997083#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...