weblogic 12 to 11 ejb connection problem

if you have wl11 ejb server and in that environment generated ejb client and deploy to wl12 it will give you this exception

java.lang.NoSuchMethodError: weblogic.rmi.internal.MethodDescriptor.(Ljava/lang/reflect/Method;Ljava/lang/Class;ZZZZII)V

so there are some solutions like this. but what I did was different. I deleted *******_WLStub.class from client jar and deployed the ear that way so at the end wl12 generates it on the fly just like jsp first compilation. and it works.