What I was told by Fuji Repair when I called about this was it was probably a lens mount problem. I trust the person who told me this because he has repaired two cameras for me. I was told on both bodies I purchased that it would be easier just to send it back to the merchant for a replacement. I just got #3 out of the box so I guess I will find out soon. I rarely take more than 20-30 photos on any outing so it may be a few days before it shows up. On the first one I think I had it for about 3 days before I got the error message. On the second one it was within the first 20 frames. I did a portrait job recently and took approximately 40-50 shots. I'm just mystified how people shoot 2000 frames and have time to look at them all. If I have a problem with this one it is going in for a lens mount replacement. And I will really be upset....