(adsbygoogle = window.adsbygoogle || []).push({}); I bought warhawk and gameshared it with 2 people. It says error occured during start operation. What happened and how???

You answered the question your self.
You gameshared. You can't gameshare (FULL) games, such as warhawk, echochrome full, etc.
You'll have to get both of your friends to delete it, as well as you, and you'll need to redownload it. Then, if it still doesn't work, you'll need to reformat your HDD. That's what I had to do when it happened to me.

Thanks, hopefully i dont have to format

I downloaded it after they deleted it. It sayed the same thing... Can i save my games if i format? Like save it on a flash drive?