Redeploy shows (non-blocking) stacktrace when destroying context

Hi, running jdk1.6.0_02, Maven2 (2.0.7) and jboss maven plugin (1.3.1) to deploy JSF-1.2 webapp into JBOSS-4.2.3.GA. Redeploy generates the following stacktrace:

21:56:38,684 INFO [TomcatDeployer] undeploy, ctxPath=/upstream2, warUrl=.../tmp/deploy/tmp33776upstream2-exp.war/
21:56:38,693 ERROR [[/upstream2]] Exception sending context destroyed event to listener instance of class org.jboss.web.jsf.integration.config.JBossJSFConfigureListener
java.lang.NullPointerException
at com.sun.faces.config.ConfigureListener.contextDestroyed(ConfigureListener.java:234)
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:3895)
at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4527)
at org.apache.catalina.core.ContainerBase.destroy(ContainerBase.java:1163)
at org.apache.catalina.core.StandardContext.destroy(StandardContext.java:4617)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

After that, the application runs normally (as it seems, it's a HelloWorld for JSF, so not much functionality built in as yet).