A3 launcher wont launch Arma

  • I can download mods, find servers, and even click join but all i get is a message that it downloads mission files and once thats done, nothing. Doesn't launch Arma. my launch file goes right to C:\Program Files (x86)\Steam\steamapps\common\Arma 3 which is where my Arma is, it used to work but didnt play arma for about 3 months and tried to hop on and couldnt get it to work. Steam is running in the back with a up to date arma ready to play. any help would be appreciated