I have been having problems starting up DayZ. I have Play WithSix to start up DayZ and I have been having troubles playing. I tried starting Steam as an Admin, that didn't work. I tried playing both ArmA 2 and Arma 2: Operation Arrowhead before playing DayZ. ArmA 2 played just fine but ArmA 2: OA came up with the error 'bin\config.bin/CFGinGameUI/MPtable.shadow' and 'PSSpecularAlpha:0'. Then I tried just starting up DayZ with Play WithSix but it gave me an error saying Bad Serial Number given in setup. For the bad serial number I tried using ArmA 2 Key Changer and that didn't work I don't know what to do. I tried opening steam as Admin. I am already Admin of my computer. I looked up how to fix the problems but they don't work. At this point I'm not sure what to do.