I went out for some aircraft photography yesterday when I got the Err 99 on my display. After taking out the memory card it worked again but later the same thing happened again. I changed memory cards and lense and it worked again but it still happens. Is this a serious problem? When I take out the memory card and put it back in it works fine but has happened several times now.
Anyone who has had the same problem and how was it fixed? I hope it is not something serious as I will go to AMS next month and can't afford to fix it right now as it takes months to fix (we don't have a camera store here that can fix these cameras and it has to be send abroad)