javax.el missing

[janson12]

can someone help me with this please. i'm developing a web app on jboss 4.2.0 where i need the setActionExpression method (for a Richfaces PanelMenuItem) from the javax.el lib. Unfortunately it's not part of the jboss libs. does anyone know where to deliver it and add it?

[janson12]

found libs, added libs, deployed and got following exception:

Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener
java.lang.LinkageError: loader constraints violated when linking javax/el/ExpressionFactory class