From Nikon's website regarding this problem:
"Having a "Lens error" message display on the camera's LCD display
indicates a problem with the camera lens mechanism. This situation
generally requires that the camera be sent to a Nikon Service Department
for repair. Before doing this however, be sure to check these
- One possible reason for this error is if the camera is switched on
and the lens unit is prevented from extending. The camera will struggle
for a second to extend the lens, then report the problem. Inspect the
lens for any obvious obstruction, then turn the camera off, then on
again. Usually, simply switching the camera Off then On again is enough
to correct this problem.
- Remove and recharge and/or replace the battery. If the error does
not clear up right away, leave the battery out of the camera overnight,
and try again the next day.
If the above tips do not help, then we regret the camera must
be sent to our Nikon Service department as there are no user serviceable parts on Nikon Coolpix cameras."