Orc Campaign Issue

[AlternateDimension]

My brother and I have been playing all the campaigns avaibale and then we finally got to the Orc's last Chapter(By Demons Be Driven, I guess) we entered the code and also watched the full cinematic .Then we started, as soon as my brother or I made a single move the game closed without any advice nor an error window appeared, so we loaded the map again but this time skipped the cinematic, the same results.

I think it is a bug but maybe it is not, any solution?(thanks)