killall is a termal command that will quit the dock. Restarting the dock may fix the preview windows.

Open terminal and type

killall Dock

You'll see the dock disappear and reappear as OS X restarts it. Then try Mission Control again. Also try launching Mission Control using alternate keys including the MC icon, F3 or the mouse and see if you get any differences.

actions · 2013-Jan-19 11:11 am ·

haroldo
join:2004-01-16
USA

haroldo

Member

2013-Jan-19 11:14 am

killall Dock worked...thanks!

actions · 2013-Jan-19 11:14 am ·

skeechan
Ai Otsukaholic
Premium Member
join:2012-01-26
AA169|170

skeechan

Premium Member

2013-Jan-19 11:15 am

If that doesn't work, try hovering over the icon and swiping up. This gesture is Zoom in Mission Control. Maybe somehow the preview window is there but totally minimized.

actions · 2013-Jan-19 11:15 am ·

skeechan

skeechan to haroldo

Premium Member

2013-Jan-19 11:16 am

to haroldo

If killall Dock worked, restarting the Mac should have worked. Weird.

actions · 2013-Jan-19 11:16 am ·

haroldo
join:2004-01-16
USA

haroldo

Member

2013-Jan-19 11:30 am

I guess I meant to say that it happened a while ago, I had rebooted, but didn't pay attention to the fact that the reboot cured it and the problem recurred. So, when you asked, I was referring to the fact that I rebooted recently (not when you suggested).
In any event, thanks for your help

actions · 2013-Jan-19 11:30 am ·

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