Yup. Everything is in the correct file. Names of files are spelled correctly. I'm thinking it has to be something with a plugin conflict. You can see my plugins in my original post. I'm getting so frustrated with this.
Ok I just checked your plugins list and I think I know where the Problem is.
Please remove the YAD Sideview Battlers Enhancement plugin, save your game and try again.
I think that this collides with the YEP Animated Sideview Battlers script.
If this doesn't help and you still have issues, move the animated sideview battlers plugin under the Action sequence packs ones and move the battle AI Core over them.
Hope this helps! :)