aphotics

I really need help with an ongoing issue in American Truck Simulator Multiplayer. Whenever I try to launch multiplayer, I get the fatal error: Unsupported game version detected! To play you need to have American Truck Simulator v. 1.1.0.8s [f84fd2f0a569] ! Do you need help with downgrading? When I click "yes", I get "sorry, we couldn't find that!" I've tried switching my game version to the beta "temporary_1_0 - 1.0.x for incompatible mods" and I got the same error. Please help. I was able to play multiplayer on my other computer and I'm not able to play on this one. I've also tried twice now uninstalling and reinstalling the mod, and no luck. I even tried reinstalling the game itself and it still doesn't work.