[quote name='javeryh']Can someone explain how Chewbacca didn't know Yoda in Episodes V and VI when they are seen together in Episode III? I can (barely) accept the mind wipe of the droids (which is ridiculous because they are supposed to be battle hardened and been around for a while according to Episodes IV, V and VI).[/QUOTE]
Chewbacca and Yoda never interacted together in V and VI, so it is not known if he did, in fact, know Yoda was still alive. And we don't know what conversations Luke and Chewbacca had between V and VI.