Okay, now after taking a few deep breaths, I have decided to try and civily sort this out. I have done everything I am supposed to do for creating/transplanting units. At present, I am trying to make the Huscarles available from the tutorial trainable and USABLE by the HRE. All attempts have failed. I copied the UI to the proper folders, checked the modelsdb (which had a entry for the HRE), added them into the buildings file, and added them in the units file. They don't appear in the campaign, but appear in the custom battles, where if I try to use them in battle the game CTD. Please, someone help!