I tried it with JBoss EJB 3 and found that jboss-service.xml was missing in jboss-aop_1.0.0-FINAL\jboss-40-install\jboss-aop-jdk50.deployer\META-INF. I figured the problem out by copying the same file from RC2.
Thanks,
Ias
RC stands for release candidate and is not the final stable version. The unqualified release is the final version.