When I replace the JARs for Mojarra 2 in the directory %JBOSS_HOME%\server\default\deployers\jsf.deployer\Mojarra-2.0\jsf-libs with version 2.0.3, then everything works fine.

However, if I upgrade to Mojarra 2.0.4-b03 then I get the stacktrace below as soon as I invoke my /index.xhtml page which is based on RichFaces 3.3.3. I'm not sure whether the error belongs to JBoss' JSF integration or to RichFaces.

There is some German text inside the exception message saying: "Illegal attempt to define a ViewHandler after a response was created".

19:51:20,579 ERROR [org.ajax4jsf.webapp.BaseXMLFilter] Exception in the filter chain:
javax.servlet.ServletException: Unzulässiger Versuch, ViewHandler festzulegen, nachdem eine Antwort erstellt wurde.
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:321) [:2.0.4-SNAPSHOT]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:324) [:6.0.0.20100721-M4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.0.0.20100721-M4]
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206) [:3.3.3.Final]
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) [:3.3.3.Final]
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388) [:3.3.3.Final]
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515) [:3.3.3.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) [:6.0.0.20100721-M4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.0.0.20100721-M4]
at org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.doFilter(FilterDispatcher.java:63) [:6.0.0.20100721-M4]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) [:6.0.0.20100721-M4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.0.0.20100721-M4]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [:6.0.0.20100721-M4]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) [:6.0.0.20100721-M4]
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181) [:6.0.0.20100721-M4]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) [:6.0.0.20100721-M4]
at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) [:1.1.0.CR3]
at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) [:1.1.0.CR3]
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88) [:6.0.0.20100721-M4]
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:93) [:6.0.0.20100721-M4]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) [:6.0.0.20100721-M4]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [:6.0.0.20100721-M4]
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) [:6.0.0.20100721-M4]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [:6.0.0.20100721-M4]
at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53) [:6.0.0.20100721-M4]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [:6.0.0.20100721-M4]
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:893) [:6.0.0.20100721-M4]
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:599) [:6.0.0.20100721-M4]
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2024) [:6.0.0.20100721-M4]
at java.lang.Thread.run(Thread.java:619) [:1.6.0_21]
Caused by: java.lang.IllegalStateException: Unzulässiger Versuch, ViewHandler festzulegen, nachdem eine Antwort erstellt wurde.
at com.sun.faces.application.ApplicationImpl.setViewHandler(ApplicationImpl.java:559) [:2.0.4-SNAPSHOT]
at org.ajax4jsf.event.InitPhaseListener.beforePhase(InitPhaseListener.java:92) [:3.3.3.Final]
at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:224) [:2.0.4-SNAPSHOT]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:95) [:2.0.4-SNAPSHOT]
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:107) [:2.0.4-SNAPSHOT]
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:114) [:2.0.4-SNAPSHOT]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:308) [:2.0.4-SNAPSHOT]
... 29 more