It's not just this mod. Apparently there's some kind of issue where, because 3.17 added so many new spellcasters, if you have too many mods enabled at once spellcasters start losing paths. I guess the number of magic paths you can have in a game is capped somehow. There's some discussion in the bug discussion thread in the main forum starting with
post #612459 but there's no resolution yet.
In the meantime I would try turning off mods that you aren't using, which may make the tyrant start working again.
-Max