In one of the applications that I develop, since version 9.3 of Xcode, an embedded target binary that is launched from the main application using NSTask now fails to launch with the following error message:Sandbox: [AppName(App PID)] deny(1) forbidden-sandbox-reinitI couldn't find much information about it and it's not clear what change happened in Xcode 9.3 (also happens in 9.4 beta 1) that causes this to fail.