Old Timer wrote:
Did you format the card to the camera that you are using. I had that problem and I had forgot to format the card to that camera. Took me about a week to figure out what was wrong with that camera. My other cameras and card were working alright then after reading the manual and changing the settings in eos setting back and forth I finally stumbled on to the problem. Another time the settings got changed in eos utility.
No, I didn't format the card. I'm wondering if the settings did change in EOS but it doesn't give me any options just says busy.