Is there any application.xml file inside FINDOK_EJB_Trip.ear. I guess, the application.xml mentions the module antlr.jar and the ear does not contain it. Could you post the application.xml file and even the output of the following: - From command prompt go to D:/dv-java/jboss-4.0.5.GA/server/default/deploy - Run the following command: jar -tf FINDOK_EJB_Trip.ear Post the output View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4044419#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...