I can't find anything else on here about this, but I've tried several external keyboards with my new MacBook Pro (including the latest Apple) and Command+Delete doesn't work with any of them. It works fine using the notebook keyboard. I've reset the key combos to default several times. Nothing. Other key combinations that I use all work. And the command key and delete key each work for other things. I'm completely stumped. Anyone have any ideas? Thanks!