Plutonium

i did those steps with utorrent still crashed me on dlc maps no clue what to do here...

So i download the game through steam launch it works fine untill i go to play on a dlc map, i then go and run the piry file in my bo2 folder which stops at around 50% and gives me errors then says its done. I go ahead and launch the game and it insta crashes anyone know what could be wrong?