Hi!
Just want to say that somehow, my problems were solved and I'm now able to enjoy playing the mod. Thanks so much Edain team for your fantastic work!
My problem was that when I choose skrirmish and the AI was set as "random" faction, the game crashed when I tried to launch the skirmish.
So if someone is having the same problems as me with, try to appoint a faction to the AI, don't let it be at random.