There are currently no proper trainers for the Steam/latest versions. The only one available has many bugs and crashes all the time when you re-load a save. This custom version has fixed all the issues the original SNT had and is fully working. To install: Copy everything to root or the plugins folder.
Controls are the same but if you don't remember: F3 to open, F4 to close, F6 to airbreak, Numpad 0 to go back, Np 5 to select option, Np 4 and 6 to go left and right, Np 8 and 2 to go up and down.