I have a kodak c310, trying to format the card and

The c310 will only accept SD cards up to 2GB.

You haven't said which card you're trying to use but the symptoms are typical of those encountered if you try either a larger capacity SD card (which go to 4GB maximum) or if you're trying to use a later SDHC (the HC means High Capacity) card. The c310 was designed and manufactured before SDHC cards were manufactured and is incompatible at the basic hardware level. SDHC's will fit inside as they have the same form as SD cards, but your camera is unable to use them.

If you have tried using the wrong card then all you need to do to fix the error is to replace it with a standard SD card not exceeding 2GB. In practice you'll find that your camera may have issues with some brands/models of 2GB SD cards but that it will work fine with any make or model of 1GB SD card. The smaller capacity card will also ensure that your camera does not become awkwardly slow in operation.

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