Actually, the 177 trainer worked for me in 178.2. I had to alt-tab out of the game after trying to activate the trainer (I wait until I'm in game and have opened the inventory before I do this) and then hit Ok on the pop-up about not finding the game exe, but after that, I heard "Trainer Activated" and all the options I tried worked just as they did in 177.
Okay, I'll give this another try; thank you.