Hi It seems the problem is related to your particular configuration in jboss.
See for example this link. I think there you can find more information about it: http://community.jboss.org/thread/152151?tstart=30 It doesn't look like a problem in tomahawk. regards, Leonardo Uribe 2011/10/11 Érico <erico...@gmail.com>: > Hi > > I am facing the following error when deploying the 2 war files in jboss > 5.1.0 : > > SEVERE [org.apache.myfaces.shared_impl.webapp.webxml.WebXmlParser] (main) > Unable to parse web.xml > java.lang.ClassCastException: > org.apache.xerces.jaxp.DocumentBuilderFactoryImpl cannot be cast to > javax.xml.parsers.DocumentBuilderFactory > > ... > > Caused by: java.lang.ClassCastException: > org.apache.xerces.jaxp.DocumentBuilderFactoryImpl cannot be cast to > javax.xml.parsers.DocumentBuilderFactory > > ... > > ERROR > [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/myfaces-example-simple20-1.1.11]] > (main) Exception sending context initialized event to listener instance of > class org.jboss.web.jsf.integration.config.JBossJSFConfigureListener > > ... > > Caused by: java.lang.InstantiationException: > org.apache.myfaces.webapp.filter.TomahawkFacesContextFactory > > I have copied the 2 JSF jar files (myfaces-api-2.0.4.jar and > myfaces-impl-2.0.4.jar) to jsf-libs in > JBOSS_HOME/SERVER/DEFAULT/DEPLOY/jbossweb.sar as it is described in : > > 1. http://community.jboss.org/wiki/upgradejbossastojsf2 > > 2. http://community.jboss.org/wiki/JBoss5AndMyFaces > > I have added in both applications web.xml the context parameter : > > <context-param> > <param-name>org.jboss.jbossfaces.WAR_BUNDLES_JSF_IMPL</param-name> > <param-value>true</param-value> > </context-param> > > > > Can you guys help me out on this ? I need to copy/paste the other common jar > files that come along with myfaces binaries ? > > Also is there any configuration for TomaHawk ? > > Thks&Regards > Érico >