I removed jboss-embedded-api.jar from my lib folder. I guess I goofed up while listing the jars (I listed jars from my seam2.0.0GA build) - pls refer to my first post for jars I included from seam2.0.1.CR1 build). In short I do not have jboss-deployers.jar included when I get this error. After removing jboss-embedded-api deploy still fails with MalformedURLException. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4116558#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...