Thanks for the information!
The trainer functions only partially.
If one uses once the Numpad 5 (Stealth), one cannot climb up any more on the horse.
With the space bar one changes apparently in the body of the horse. However, one cannot move it.
Is there a trick to avoid this problem?
don't use the stealth options in situations where the coding of the game and using that option causes problems.
best,
Cal