Hi, I have been noticing on my MacBook Pro lately that sometimes one of my applications in the dock will quickly change its icon to the executable icon that change back really fast. Why is it doing this? It is very brief and happens rarely(so not a lot). An application that his happened to was my mail app at one point. I have tried restarting and it still happened again. Here's a pic of what I mean by executable icon: https://upload.wikimedia.org/wikipedia/en/8/85/ExecutableBinaryIcon.png By the way, I'm not entirely sure if this is the correct Thread.