Some help please

[The historian]

I've moded the game to incorporate 8 new units replacing 6 old ones and adding 2 new ones they work fine in the custom battle but for some reason the imperial campaign isn't working anymore when i select a faction and proceed i'm thrown back to the main menu.I've only modified theese files:export_units,export_descr_buildings,export_descr_units_enums;
export_descr_units,descr_model_battle and i've added some tga's(unit cards).If you have any idea on what could be causing the problem please tell me.

Ups. I posted in the wrong place could some moderator please move this thread.
Sorry i didn't mean to.