I just now built 2.4 from source, worked fine. Try starting from scratch again (delete what you have an unzip from the tar.gz file again, and then run build). When you run the build, you should first see the thirdparty directory being populated and then a series of compiles. If the above still causes the same problem, re-install Ant (I am somewhat suspicious that it doesn't recognize 'target') View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3985840#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...