Lizsieuk

Please help I don't know what to do, I have played over 100 hrs on this game and now it won't launch.

I don't know what to do or where I post this. I have unistalled the game and reinstalled it about 4 times now, I have validated my game, I have uninstalled steam and reinstalled steam, I've gone on public test and gone off it. Grounded starts like it's launching and then I'm back to steam page. I'm so stuck I've been playing since August and never had a problem until now. Can anyone help me please.

Did you find a fix? I'm now having same issue, yet have played it previously so don't know what's happened.