Die Repaints bitte in folgende Ordner verschieben 

C:\Program Files (x86)\Steam\SteamApps\common\OMSI 2\Vehicles\Citybus_S31x\Texture\REPAINT\319_1+2+1_E3
und
C:\Program Files (x86)\Steam\SteamApps\common\OMSI 2\Vehicles\Citybus_S31x\Texture\REPAINT\315_1+2_E3