Yeah, I'm trying it out now. Everything seems to work except for the minerals for some reason.
From the trainer's readme:
Add Food/Minerals/Credits: For the first time you started a game with the trainer you MUST end a turn first. Press hotkey to add more of the resource and end your turn again so changes take effect.
Please verify that you use our latest trainer v1.6.7 #2 with the latest/updated game version.