I get the following ClassCastException:

ClassCastException: Cannot cast org.richfaces.event.DataScrollerEvent to org.richfaces.event.DataScrollerEvent

When calling:

<rich:datascroller align="left" for="table" actionListener="#{action.scrollListener}"/>

public void scrollListener(final ActionEvent event) {
     final DataScrollerEvent scrollerEvent = (DataScrollerEvent) event;
     log.info("scroll #0 #1", scrollerEvent.getNewScrolVal(), scrollerEvent.getOldScrolVal());
}

I did a grep for DataScrollerEvent at the root of my project and this is what I got:

Binary file exploded-archives/GotPrintSeam.ear/lib/richfaces-api.jar matches
Binary file exploded-archives/GotPrintSeam.war/WEB-INF/lib/richfaces-ui.jar matches
Binary file lib/richfaces-api.jar matches
Binary file lib/richfaces-ui.jar matches

Why are there two versions of the same class in separate jars? JBoss uses different classloaders for loading the libs in the war and the ear so I think that's what's causing the problem. Since my action is a SFSB it's loaded using the EAR classloader and I think the RichFaces is loaded using the WAR classloader.

Is this a bug? Is there a fix/workaround?

I am using Seam 2.0.1.GA with RichFaces that was bundled with 2.0.1.GA and JBoss 4.2.2.GA