Our Application is implemented in JSF frame work. JSF version is JSF 1.0. We are using SUN supplied JSF jars. jsf-api,jsf-impl,...etc and aslo jsf-ibm jar since we working with RAD 6. We need to implement AJAX in our application. But if i put ajax4jsf1.1.1.jar and oscache-3.2.jar, it's showing the error "javax.faces.FacesException: Can't parse configuration file:wsjar:file:/D:/Workspace_ajax/MUWWeb/WebContent/WEB-INF/lib/ajax4jsf-1.1.1.jar!/META-INF/faces-config.xml" where Workspace_ajax is the work space. I think there is a conflict beween the faces-config of ajax4jsf and our application. Can anyone suggest one method to resolve this? I cannot change the jsf jars provided by sun because application should not get affected.