I had the same problem. I hit it a long time ago when it did it for the first time. It has been a year since then and it is doing it again. I tried the book solution again and it will not work. I tried holding the lens, no luck, and I tried applying pressure when the lens went back in, again, no luck. Honestly, I don't think I will buy another Olympus fe series camera
again. The solutions provided do help the first few times your camera does it, but you might want to start checking the market for a new camera.