Nikon released new firmware 1.03 for Nikon D600 and firmware 1.02 for Nikon D610. The new firmware fixed the problem of optimal exposure would sometimes not be achieved in photos taken in live view using a lens with electromagnetically controlled aperture (type E lenses). It also fixed the issue when used to take pictures after an option was selected for Custom Setting d10 (Exposure delay mode) in the CUSTOM SETTING MENU, Camera Control Pro 2 would sometimes display the error “The camera was not able to take a picture.” despite having actually taken the picture.
Nikon D600: Firmware 1.03
Nikon D610: Firmware 1.02