Apart from what my colleagues and the mods have mentioned in this post already, there isn't an easy fix for this until the next version... But if you're desperate to get these working in-game and are comfortable with editing the battle_models.modeldb file, then it might be worth checking this thread, as it contains updated versions of the models and textures for the very same units I originally sent to Gracul:-
http://www.twcenter.net/forums/showthread.php?t=525267
These are what I'm currently using with 6.4 and so far everything is running as smooth as silk..... If you need any further help then please don't hesitate to PM me.