Ok, I fixed the problem, the latest change made on the aop/build.xml (31-12-2006) makes the build fails when building a recent checked out jbossaop project, because it can't find some files/directories To fix it I had to create : | aop/output/etc/default.mf | aop/output/etc | aop/output/lib | maybe adding a dependency at the source-jar in aop/build.xml target could solve this problem, I will look for it. regards Alejandro View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997647#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...