Yesterday I bought rFactor (Steam version) and played it about half an hour and it worked well, but I wanted to install mods. Today I downloaded the Endurance Series SP3 mod by EnduRacers, and after installing it, the game doesn't launch when I click "Play" on steam or when I open the rFactor.exe file, it just shows the Endurance Series intro image and then it disappears: rFactor appears in the Task Manager for some seconds but when the image disappears, the game closes. I installed the mod in the rFactor main folder. I haven't installed any other mod. Did I do something wrong or is there any problem?