Thanks. I´ve found the Peterbilt 379 Engines and Transmissions and placed it above the Peterbilt 379 Part 1 & Part 2, but when I choosing another engine with the white big driving wheel or the other big spoke driving wheels, the game crashes after Bying it in the Configuration.
That means for the moment I have the 750 HP Caterpillar Engine and for that I can choose any driving wheel and the game not crashes to the desktop.
But, when I want another Engine (815 HP) then the game crashes with all driving wheels, except for the standard driving wheel, which was the only one with textures in the Beta Version. Should all driving wheels, what are included, also work with all engines? I hope so, but it seems like it doesn´t work and the game crashes.