Hi lipmanp, Yes, I did followed the instruction in the getting start page. Seam does support 4.0.5. ---------------------------------------------------------------------------------- 2.1 Before you start Make sure you have JDK 5 or JDK 6, JBoss AS 4.0.5 and Ant 1.6, along with recent versions of Eclipse, the JBoss IDE plugin for Eclipse and the TestNG plugin for Eclipse correctly installed before starting. Add your JBoss installation to the JBoss Server View in Eclipse. Start JBoss in debug mode. Finally, start a command prompt in the directory where you unzipped the Seam distribution. ----------------------------------------------------------------------------------- If anyone has idea what the problem is, please help. Thanks Benson View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4077362#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...