Rank: Wiz
Rating: 81%, 3606 votes
Very common.
The casios have 3 ways to turn them on. apart from the primary button there's the rec and play button, and they tend to get pressed when people carry the camera ina restricted space, such as a pocket.
The lens then tries to extend, and when the camera senses that the lens is obstructed it triggers the error which is meant to protect the lens frmo damage.
What probably happens on many units is that once the error is triggered, there's no going back. while the error is supposed to clear next time you turn on the camera, a fault causes it to be imoperable.
To prevent this you must disable the option of having the rec/play button turn on the camera, which is possible through the menu, or/and have a good case to protect the camera.
You might be able to fix this with a firmware upgrade from casio, unfortunately there isn't any upgrade to this model on the casio web site. I suggest you contact them, and demand this to be treated as a factory fault.
here's the page it should be on, if you feel like waiting for it -
http://world.casio.com/qv/download/en/Good luck