I've tested the current trainer with version 219.3 and it seems to work fine.
Honestly, I'm playing it as I type this, and all I've noticed is that dinos seem to be invulnerable (ive tried to kill a dodo and sat there for 15 minutes smacking it with a club), other than that it works just fine.
How do you start the Trainer ?
Double clicking on the trainer executable? I'm not sure if I understand your problem.
Updated trainer will be posted soon.