i had used This Tutorial for change the context of the example "ECMDEMO" to "gustavo" , but i get this exception
2013-04-11 15:58:44,469 ERROR [exo.kernel.container.RootContainer] (main) Cannot create the portal container 'gustavo' . ServletContext: org.apache.catalina.core.ApplicationContextFacade@224f9db
java.lang.RuntimeException: Cannot instantiate component key=org.exoplatform.services.wcm.newsletter.NewsletterInitializationService type=org.exoplatform.services.wcm.newsletter.NewsletterInitializationService found at jndi:/localhost/gustavo/WEB-INF/conf/sample-portal/wcm/newsletter-configuration.xml
AND IN THE END OF THE LOG, SHOWS THIS
2013-04-11 17:12:24,309 WARN [exo.kernel.container.RootContainer] (main) The portal container 'gustavo' doesn't not exist or it has not yet been registered, please check your PortalContainerDefinitions and the loading order.
I followed the tutorial step by step and do not know what can be the problem