I narrowed it down to custom races, I was able to do extra things before getting an error
Tesv error runtime error or something..
That's why custom races are not included, everything in the pack is made to be compatible, what mods you add and what you do with the pack after installation is your responsibility.
Quote :
*If you add you're own mods to the pack it's your responsibility to follow modding etiquette correct load order and so forth