Unfortunately, the trainer keeps being useless because of the damn Net Framework latest version. This gonna be a prob with future trainers, I can tell, but taking into account the fact we pay a lot for a yearly membership, trainers should be uploaded for all the OS. I regret a lot to become a member, that's the truth.
The .NET required to run the trainers is compatible with Windows 7 SP1, Windows 8.1 and Windows 10. We're not going to go back and support XP or whatever outdated OS you might be running. It's time to update your system or just not use the latest state of the art programs.