run Aurora and the game as an admin
Have you posted a file update request for this?
Also if you can post you save game, that might help.
Please use the update notification system to report a game patch, update or to report that the trainer may not be working with the latest version of the game. If 3 or more reports have been filed, consider BOOSTING the priority of this title for a faster turnaround on the updated trainer.
Your CURRENT gold should NOT be equal or higher than your maximum gold. Because this is what "locks" it up.
Save game sadly won't help you as reloading the game without the trainer makes it work again, it will just reset coins value to 0