I'm not sure if I did anything to cause this; if I did, I don't know how to undo it. The format of my library screen has changed. Across the whole screen is a group of 3 photos from my last import, with the one I have chosen highlighted. I can still see the strip of photos on the bottom. If I scroll up and down, I can see the whole set is there. But no navigator, list of files, import and export buttons, etc. How do I get my normal library screen back?
Post a screen shot of what you are seeing.
Hit the Tab key.