I recently purchased a new D3400 and 128GB sd card (that had never been used in anything else), I was shooting in RAW only and all was going well until my 364th shot when all of a sudden I started getting the "Cannot Display This File" error message.
After taking a shot I could see the image on the LCD screen but if I tried to go back and see it later I was only getting that message or seeing a red box with a cross.
Upon opening the image in Capture NX-D it appears that something has gone wrong with the shot.
Does anyone know how to a) resolve this and recover any of the other shots?
The only photo's of my daughters 2nd B'day are on this camera so I would massively appreciate any help you can provide.