Huh, I managed to make the system "work" by doing very uglyt hacking in SeamStateManager.java | | public void writeState(FacesContext ctx, SerializedView sv) | throws IOException { | | { | | ExternalContext extCtx = ctx.getExternalContext(); | Object serialFactoryObj = extCtx.getApplicationMap().get( | StateUtils.SERIAL_FACTORY); | | if (serialFactoryObj == null) { | SerialFactory serialFactory; | serialFactory = new DefaultSerialFactory(); | extCtx.getApplicationMap().put(StateUtils.SERIAL_FACTORY, | serialFactory); | } | | } | stateManager.writeState(ctx, sv); | } | That is, NO org.apache.myfaces.webapp.StartupServletContextListener configured in web.xml. Maybe this is MyFaces bug, because in org.apache.myfaces.portlet.MyFacesGenericPortlet has a lot of methods for all kind of initaliazation (like init() and initMyFaces()). Especially interesting is the initMyFaces() which looks like replacement of StartupServletContextListener.initFaces(), but for portal/portlets. Somehow however, i couldn't get the SERIAL_FACTORY hack work from initMyFaces() due to FacesContext being null. I hope i'm not missing anything else (critical) from StartupServletContextListener initalization if the MyFacesGenericPortlet is not working correclty. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3980183#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...