I started the editor for the first time today and only created a mod and level like described in larians twitch.tv recording.
The Editor crashed after reloading the level (the reload after the AI grid generation).
Now I thought roguelikes workaround should work.
But i've got only the Mods/(your Mod)/Levels/(your Level)/Ai path.
Either I'm completly misreading roguelikes post or I have only the correct path.
Anything else I could try?