To reproduce: - Turn off or disconnect your internet - Put steam in offline mode (or restart PC and it will ask you to put steam in offline mode) - Open the rF2 Launcher - Watch the content in the installed folder: vehicles, tracks and race-events. - Close the launcher - and open the launcher again. That will remove the rest. - Reconnect your internet and put steam in online mode again. - Open the rF2 launcher and get some coffee.