DS2300 shows memory error but just changed memory card and still not fixed? Help,please?

SOURCE: memory card problem

I also have this camera. The largest memory card the camera will accept is a 128MB. You may want to trade your 1GB card for the smaller 128MB.....kgr

SOURCE: my olypmus digital c-750 ultra zoom camera will not format

The problem is that the largest xD card that your camera can support is an M or H 512mb card. The 1gb or 2gb cards are not compatible. The firmware in the camera cannot support memory storage with that capacity. The camera came out before those cards did and there no plans to upgrade the camera to allow those types of cards to be supported.