Turned on my Nikon D5100 this morning and got an error message that tells me to press the shutter release. I do, and the mirror is obviously stuck. Keep getting the same message. Battery is charged. SD card has plenty of room. All research is telling me to take it in to get it repaired.

SOURCE: nikon d40

I had exactly the same problem, i tried everything,battery out, sd card out , lens off etc...nothing worked.Completely by chance and irritation i repeatedly pressed the shutter butten over and over
( without the lens attached ) till it didn't react at all.On my LCD i got a normal menu so i put the lens on and bingo it was fixed, still works fine.I think maybe the shutter was out of alignment.
Hope this works for you.
Olly

SOURCE: nikon d40

Take the lens off and continue pressing the shutter untill it doesn't react anymore, you should then have a normal menu without the error message.Put your lens on and you're all sorted.Cheaper and less hassle than sending it to Nikon.
olly

SOURCE: Nikon d40x shutter stuck

The manual (pg 112) simply, and unfortunately, states this message "Press shutter release button again. If error persists, consult with Nikon-authorized service representative".

Some questions that might help: have you had the camera in some extreme conditions, damp, sand, etc. Clean the shutter button really well. Maybe use a small air blower and clean in the shutter release creases.

In the end, if the error continues, it will need to be serviced.

SOURCE: Nikon d60 shutter release error

press shuter release button again

SOURCE: Nikon D70 mirror sticks open

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