Thanks for the pointer bjoy, but that file is almost exactly the same as the deploy file provided with KOSMOS. The only difference is the optional flag which I added, but it makes no difference. I still get the error [java] java.lang.NoClassDefFoundError: com/liferay/portal/tools/PortletDeployer I am deploying on Windows XP, with Liferay 4.1.3 anf Tomcat 5.17 (I had to downgrade because of a Tomcat problem with context loading) and JVM 1.5. At a guess I would say my classpath is not set correctly, although the deployer may have changed. Since I don't know where it should be found I don't know what to change. Any idea where to look next? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3992509#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...