Hi When I select Export or Save as from the file menu in Preview andother apps, the window appears as a wide blank that goes off both sides of the screen; when I go to Show All Windows from the dock it appears to be 20-30x wider than the window and cannot be resized so it is unuseable. I looked for any information and can't find anything. Google search fixes suggesting resizing from the side or the corner.... which is impossible to get to (most likely maxed size). Any suggestions would be appreciated.