ok if this is the wrong place dont shoot me sry lol but i need help with this UDK every time i try to install a game from it i get an error and here is the pic can aney 1 help me plz bc i want to play AFF and havent got to yet.
I think support would have been the correct forum for this. Are you logged in as administrator, and is your UAC off?
Your problem is the Pre-Requisite Instalation.Some of your software is using the MSI exec recurse from dotNet in the moment you try to update the new pre-requisite software like your dot Net redistributable is earlier than dot Net redistrib. from UDK try to install. But your Windows is using it or one of the services on your machie are using it. So you never will install it.
Try to close every application including Steam from the task bar . Also shutdown any Service or application from MSIExec started before.
You probably will succed.
Later if you have any other problem post it in Support Forum.