The problem has been solved by developing a simple Tobago-App, that is able to perfom page-transition. The a simple comparison with the ill project guided me to the solution, i actually do not understand:
-> web.xml ++ dropped some <mime-mapping> ++ removed <jsp-config> that came from a derived tobago app ++ erased following context param <context-param> <param-name>com.sun.faces.validateXml</param-name> <param-value>true</param-value> </context-param> -> faces-config.xml ++ removed the following lifecycle entry <lifecycle> <phase-listener> de.xxx.wz.blueprint01.app.MyDebugPhaseListener </phase-listener> </lifecycle> with the following Phase Listener that acts as a flow catcher (using a debugger) package de.xxx.wz.blueprint01.app; import javax.faces.event.PhaseEvent; import javax.faces.event.PhaseId; /** * @author groove * */ public class MyDebugPhaseListener extends org.apache.myfaces.tobago.util.DebugPhaseListener { /** * */ private static final long serialVersionUID = 3677750902208870874L; /* (non-Javadoc) * @see javax.faces.event.PhaseListener#afterPhase(javax.faces.event.PhaseEvent) */ public void afterPhase(PhaseEvent arg0) { final PhaseEvent checkEvent = arg0 ; super.afterPhase(checkEvent) ; return ; } /* (non-Javadoc) * @see javax.faces.event.PhaseListener#beforePhase(javax.faces.event.PhaseEvent) */ public void beforePhase(PhaseEvent arg0) { final PhaseEvent checkEvent = arg0 ; super.beforePhase(checkEvent) ; return ; } public PhaseId getPhaseId() { return super.getPhaseId() ; } } Any clues what kind of bĂȘte-noir i had created? Merci, Groovie -- View this message in context: http://www.nabble.com/-TOBAGO--How-to-debug-debug-transitions-in-%3Cnavigation-rule%3E%27s-tp19772680p19811237.html Sent from the MyFaces - Users mailing list archive at Nabble.com.