I changed memory card and now it works again. A brand new Extreme CF PRO 64gb. It completety locked the camera. I haven't experienced this before. Does anyone know what it is?
Was the card formatted in the camera before it locked?
I am not 100% sure it was formatted with that camera. But the card didn't want to format in the camera when I tried. I tried three other CF-cards too and they didn't want to format either (The XQD-Card works). There might be something wrong with the pins in the camera? Maybe they can't read the cards?
I move cards around to different cameras all the time, and never reformat them. Even moving between a Sony and a Nikon. Never had any trouble with cards.