Yeah thnx mate I'll give that a go, after work this arvo. ;)
Edit: Added Arma 3 to ZA exceptions and giving all access rights, Steam already had access rights. Still no change.
Thanks for the suggestion all the same tho.
Does anyone know when the Dev Team might look into the ZA problem ? I bought A III yesterday and uninstalled ZA so I could have a peek. But I like having my ZA running, so I reinstalled it again. I hope they look into it some time soon... Cause I'm really busting to get into A III