For some reason to 16 /2/2016 American Truck Simulator Multiplayer will not start I get a message saying unsupported game version detected! tp play you need v.1.1.0.8s [f84fd2f0a569] !. Single player mode starts ok. i downloaded and installed client_20710 last night and work ok until today. I noticed American Truck Simulator Simulator was in an update queue on my steam account. Any know what going on.