Is this the card you always used, or did you recently buy a new card? Because you can use MMC cards and SD cards. Most SD cards you now buy, even the 2 GB ones, are SDHC cards and they are not compatible with your camera. You should try to get an SD card. They used to make SD cards up to 4GB, but as I said, now they already make 2GB SDHC, So look careful when buying a memory card. If it was the card you always used, try to get all pictures from the card, using an external memory card reader on your computer. Then in the camera do a format, before you continue. If it does not work, try an other card. SD that is.
Answers & Comments
Is this the card you always used, or did you recently buy a new card?
Because you can use MMC cards and SD cards. Most SD cards you now buy, even the 2 GB ones, are SDHC cards and they are not compatible with your camera.
You should try to get an SD card. They used to make SD cards up to 4GB, but as I said, now they already make 2GB SDHC, So look careful when buying a memory card.
If it was the card you always used, try to get all pictures from the card, using an external memory card reader on your computer. Then in the camera do a format, before you continue.
If it does not work, try an other card. SD that is.