I have reproduced the PhaseListener NullPointerException in the seam-icefaces booking application by changing synchronousUpdate to false (thereby enabling asynchronous update capability) in web.xml. Asynchronous updates are only needed for application-initiated page updates. If your application is driven by user events (as is the case with most web applications) please set synchronousUpdate to "true". | <context-param> | <param-name>com.icesoft.faces.synchronousUpdate</param-name> | <param-value>true</param-value> | </context-param> | We have not extensively tested Seam with application-initiated update (since the sample applications do not require this capability), but are looking into this now. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4000147#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...