I worked on a portlet that includes a richface treeview, butafter I deployed it to Jboss Portal, I got following error from the portlet window:

ERROR

Cause: javax.faces.FacesException:XML parsing error

Message: XML parsing error

StackTrace:

javax.faces.FacesException: XMLparsing error

        atorg.jboss.portletbridge.util.WebXML.parse(WebXML.java:110)

…

I have checked all related xml files, they are OK to me.Does anyone have seen the similar error before or have any idea about the error?

Thanks!