CF Card Error

Well there is a known problem witht eh CF memory design, i hope this is not your problem but it may be. Take your camera into a well lit area or get a small flash light. Open the memory door and peek down inside the camera and look at the pins inside the camera. Are they all uniform? does any look bent or out of place? there should be 2 uniform rows no pins should be missing or out of place. If they are you have a connection problem. This is one of the issues with this memory format and its why they have changed the design to SD. This is common with people who remove the cards alot and use a reader over time the card and the slot becomes warn and its very easy to bend pins because the card isnt sliding in smooth.

If this is your problem (a few bent pins) you may have to take it in for service or try and fix it yourself. Ive read about people using a mechanical pencil. Remove the lead and the pin slips right into the top and you can carefuly move it back.

Hope this helps!