The information in this article applies to:
The 3D previews in the Library Browser of my program are missing. How do I get them back?
Both the selection panel and preview panel within the Library Browser can be made visible or invisible. Also, the Library Browser can be repositioned and restored back to its default size and location.
Click on the Show/Hide Selection Panel and Show/Hide Preview Panel tools located at the bottom of the Library Browser.
If you still cannot see the preview and selection panels, it may be that you have resized the browser so that they are no longer on the screen. If you cannot quickly resize the dialog to correct this, it is easy to restore it back to its default following the instructions below.