Plutonium

I was trying to play plutonium earlier today and it kept sayin there was a virus so i deleted it and redownloaded it because i had downloaded it when it was done through the command. but regardless I press launch on either Bo2 MP or Zombies and it doesntdo anything it just closes plutonium but doesnt open the game

Exception Code: 0xC0000005
Exception Address: 0x00A7BA34

Hey I was wondering if someone could help me, whenever I play black ops 2 zombies with my friends around an hour into the game it randomly crashes and I'm not sure why. It comes up with an error and id but by the time i try and screenshot it closes itself and the game so i never get to put it up. I can try make it happen again becuase it seems to be reocurring if the id is needed