[appengine-java] problem with jsf 2.0

have an application with JSF, works fine when I deployed in tomcat but when I tried to upload it to App Engine : does not work . This is the trace error: DVERTENCIA: Elemento desconocido (deferred-value) en attribute 18-nov-2010 16:08:00 com.google.apphosting.utils.jetty.JettyLogger warn ADVERT

[appengine-java] error using jsf 2.0

Hello, I have an application with JSF (Mojarra 2.0). I tried to upload it to App Engine but I do not get it to work. If I deployed in tomcat works correctly but whith app engine dosen't work. Can someone help me?, please... I'm Spanish and my English is not very good This is the trace: *