I just played the WE campaign and the beastmen never showed up, I'm at turn 120. They were ingame but got killed early in the campaign. Then I thought that they did not show up because I waited to upgrade the Oak of Ages untill the entire map was secured. Had not played this campaign yet before so I didnt know much about it. But now it seem that I have upgraded the tree to lvl 5 and still the beastmen arent showing up...

I use a few mods but only yours to my knowledge have anything to do with scripts, I use instant quest items, no wood elf AI confederation, and I had your empire unlocker too.

Could it be one of these mods?