Sorry for late reply - since two weeks i experienced the first major CTD´s and i cant get beyond the year 236BC in my Campaign.. and abandoned it after fruitless attempts.
Ok, i will try this with the vanila weather file when i solved this CTD problem.

I tried to find the vanila weather file but couldnt find it?. ..with the search function i only find the weather_db.xml of the EBII data folder.