Although the newest trainer, 1.09 REV 21114, has the correct executable filename, it's actually for a game named Syrian Warfare. I've tried downloading the trainer twice with the same outcome.
Guerilla warfare is responsible for this - we'll fix this asap.
Sorry for the inconvenience.
Thank you.
I downloaded the trainer and the massive units option works great for infantry but does it also work for cavalry and skirmishers?
Link
Then you can let us know