I had the same problem today after updating Illustrator CC 2015. I tried resetting Essentials, but the layout panes simply flicker for a second (resetting) and then nothing happens (i.e. no palettes show up, and pressing F7, etc, does nothing).
I had the same problem today after updating Illustrator CC 2015. I tried resetting Essentials, but the layout panes simply flicker for a second (resetting) and then nothing happens (i.e. no palettes show up, and pressing F7, etc, does nothing).