Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Card locked even though it is not locked!

I have read canon forum after forum about this camera. I got the "Card Locked!" error message even though the card was not actually locked. I found out that there is a contact sensor in the camera where the card goes and if it is out then it tells the camera that the card is locked. If you take a paper clip and press it back in then the message disappears. This was a huge pain in the butt to deal with because it wasn't the card and doing a factory reset on the camera did not work either.