Game Crash when selecting scania S engine (default)

[Road_Rumbler]

While using the default SCS scania I currently have 370R engine in it. I wanted to check out a S engine but when i was looking through the parts menu as soon as I clicked on an engine S type or Super it crashed the game. What's intresting is that the badge on the truck still showed R not S. So there must be some sort of issues with the truck files or game files to create the confusion and crash. The crash log picked up the wrong fault. but here it is anyway. Also I'm now really confused why is there a Scania Super with S badge engine and another identical to it but with R engines. and why did it crash?

[Frayner]

Seems to be something to do with one of your mods. The last line in the game log is:

00:36:21.232 : <ERROR> Transmission accessory is missing!

Seems you might need to choose a certain transmission in order to pick that engine. I ran into this sort of crash with a mod as well.