Zoom will not retract
You have either experienced a lens error or your zoom dial is broken (both usually caused by some sort of impact damage, but which can be spontaneously occuring).
Look for an error message on your camera's LCD screen such as "E18," or "lens error restart camera." If you do not see a lens error but simply cannot retract your zom lens (go into wide angle mode) via the zoom lever then it simply maybe a broken command dial. Either way, however, you will need to have the camera serviced in all likelihood. Call tech support at 1-800-828-4040 M-F from 8 am to 12 midnight EST and Saturdays until 8 pm EST. Hope this helps.