I inserted a dodgy SD card in my camera. It worked ok. When I tried to eject it, it's stuck or something. I forced it out and put my other 'good SD card on. My screen keeps on showing Card Error when I put an SD card on. Works ok without the SD card though.
Sounds to me as if one of the contacts is damaged inside the reader becaue of the force job you did. These things are so inexpensive these days just replace it and get rid of the dodgy card.
