Try downloading javassist source code from http://prdownloads.sourceforge.net/jboss/javassist-3.2.zip?download Next, change isVisible(int mod, String from, Member meth) inside javassist.util.proxy.ProxyFactory class to this: private static boolean isVisible(int mod, String from, Member meth) { | // this allow generics | if ((mod & Modifier.VOLATILE) != 0) | return false; | else if ((mod & Modifier.PRIVATE) != 0) | return false; | else if ((mod & (Modifier.PUBLIC | Modifier.PROTECTED)) != 0) | return true; | else { | String p = getPackageName(from); | String q = getPackageName(meth.getDeclaringClass().getName()); | if (p == null) | return q == null; | else | return p.equals(q); | } | } | } Compile and build project and it's done! I can't submit any jars because this forum doesn't support attached files View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3962464#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...