Strange thing happened at the weekend, I was trying out the sequential shooting mode and found when I got home I had quite a few completely corrupted files and several like this:
I have re-imported this image to Lightroom and it was exactly the same, and also sent it to someone else who uses Linux and a completely different editing program and had the same result exactly. The Jpeg preview on the camera does not show this green mark.
Ignore the grumpy face!!