Originally posted by pickle chin:

So long as I don't subjugate them, the game doesn't crash, but I want to know what's causing this to happen and how to fix it?

Please read the title and description of this modpack. It does not work on 3.4 yet, and since 3.4 overhauled subjugation, it will crash the game. An update is coming eventually

Managed to patch it.

There's a few problems: Empire names will be their code instead of their actual name. So format.Irsk_gen_dic.13, etc

Blackhole Reactors are unlocked for everyone, which is pretty ridiculous. They don't cost anything, but grant the energy boost to ships.