Game will not start

I installed the Stig can fall out of the Pickup mod and every time i try to delete the mod it says that BeamNG,drive is opened but it is not. I reinstalled the game but it still will not start.

 

That happened to me sometimes too. Open task manager (ctrl+alt+delete > Task Manager) and then look for anything that has the steam icon or beamng, and then end the process. If you don't want to do that, just restart your PC.

 

OK, problem solved