Thanks. Trainer works accept for one problem. The game crashes during battle, even when none of the options are activated. It usually happens just when the battle ends and the game transitions back to campaign. The only workaround is to shut off the trainer before battle. It works well when I only want to manage cities and troop movements. A bit of a pain to keep exiting and reentering the game to turn the trainer on and off
Have you added mods & or DLC since you started the campaign ? If so start a fresh campaign. I had the exact same issue and a new start fixed everything for me.
Hope it works. 😉
[Edited by Jethro, 7/4/2020 6:18:27 PM]