Error Code (by 4 users)

I now know how to fix a stuck shutter.  I was getting a whirring sound after the Nikon D100 took a sudden flurry of pictures upon depressing the shutter release.  I only wanted to take one picture, but the camera malfunctioned.  The shutter clicked multiple times, fast.  Them, the camera started flashing "error"  When I depressed the shutter release, all I got was a whirring sound and the shutter would not function.  So, finally, I took off the lens, and while depressing the shutter release, I flipped up a small lever on the right side, inside the camera lens mount area, near the mirror.  It must be the iris control or some mechanical lens connection.  Anyway, the shutter made a click sound and the camera reacts normally.  It happened again and I repeated this action and it fixed itself, again.  Try it.