When i have a conversation that already started(by invoking method annotated with @begin, and

1.) I press back button and
2.) click on a submit button, it brings me back to the page where the current state should be, this it shows a message "Illegal navigation" this is fine, it's the page where the user should be.
3.) i click any button

However, now it bombs out. I must be doing something wrong as the tutorial had stated that free navigation is supported and handled.

Here is the exception:

javax.servlet.ServletException: No active conversation context
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:121)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
 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:45)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 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.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
13:51:16,153 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
java.lang.IllegalStateException: No active conversation context
 at org.jboss.seam.core.Process.instance(Process.java:32)
 at org.jboss.seam.core.TaskInstance.instance(TaskInstance.java:51)
 at org.jboss.seam.contexts.BusinessProcessContext.getTaskInstance(BusinessProcessContext.java:213)
 at org.jboss.seam.contexts.BusinessProcessContext.get(BusinessProcessContext.java:51)
 at org.jboss.seam.contexts.Contexts.lookupInStatefulContexts(Contexts.java:155)
 at org.jboss.seam.Component.getInstance(Component.java:1245)
 at org.jboss.seam.Component.getInstance(Component.java:1230)
 at org.jboss.seam.contexts.Lifecycle.resumeConversation(Lifecycle.java:328)
 at org.jboss.seam.jsf.AbstractSeamPhaseListener.restoreAnyConversationContext(AbstractSeamPhaseListener.java:42)
 at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:63)
 at org.apache.myfaces.lifecycle.LifecycleImpl.informPhaseListenersAfter(LifecycleImpl.java:536)
 at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:164)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
 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:45)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 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.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 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.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)

here is my session bean, where "@Conversational(ifNotBegunOutcome = "registerUserPage")
" is supposed to bring the user to the appropriate jsp specified by the nav rule "registerUserPage.:

@Stateful
@Name("registerUserAction")
@Scope(ScopeType.CONVERSATION)
@Conversational(ifNotBegunOutcome = "registerUserPage")

public class RegisterUserAction implements Register {

 private Users user;

 private String password;

 @PersistenceContext
 private EntityManager em;

 @Logger
 private Log log;

 @Begin(join=true, pageflow = "registerUserPageFlow")
 public void begin() {
 if(user==null){
 log.info("Start");
 user=new Users();
 }
 }
 ...........
}

my jpdl:

<?xml version="1.0"?>

<pageflow-definition name="registerUserPageFlow">
 <start-state name="start">
 <transition to="emailForm"/>
 </start-state>

 <page name="emailForm" view-id="/register.xhtml">
 <redirect/>
 <transition name="register" to="validateInfo"/>
 </page>

 <decision name="validateInfo" expression="#{registerUserAction.validForm}">
 <transition name="false" to="emailForm"></transition>
 <transition name="true" to="passwordForm"></transition>
 </decision>
 <page name="passwordForm" view-id="/passwordForm.xhtml">
 <redirect/>
 <transition name="submit" to="validatePassword"></transition>
 <transition name="cancel" to="emailForm">
 <action expression="#{registerUserAction.restart}"/>
 </transition>
 </page>
 <decision name="validatePassword" expression="#{registerUserAction.validPassword}">
 <transition name="false" to="passwordForm"></transition>
 <transition name="true" to="success"></transition>
 </decision>
 <page name="success" view-id="/success.xhtml">
 <redirect/>
 <end-conversation/>
 </page>

</pageflow-definition>