As the title says I have an issue that the engine sounds will randomly disappear on this route. I've had this happen with the 44 tonner, FL9 and GP9. I haven't used the FA-2 or Rs3 much since the update so I don't know if this is happening with them too. I'm using the TaD version updated as GN said, my only modification is copying the old freight car textures to the new ones to get the logos back.
Anyone else experiencing this?