hi....I had similar issues....the same exception...truly the exception is not atall helpful to find out the cause...thanks to this post.......then i noticed in one of my classes, i was using java.sql.Date...i changed it to java.util.Date....and i could deploy the bean successfully...so santhoshitha is right may be jboss didn't have supporting jars for java.sql.Date....! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055947#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...