Anyone else having problems with x9 semi- locking up when you go to CLOSE a 3d overview or floor camera? I say semi locking up because the file can still be saved and the various tools are available, but the mouse locator disappears in the drawing window. I can't really use anything. The little white mouse arrow is only visible around the edges of the drawing space and disappears inside the drawing space. 3d views are beautiful and open quickly, don't know why they won't close. They aren't