Nikon Coolpix 4600: Problem: It won't take any photos, it reads: THIS CARD CANNOT BE USED. The card is 128 MB. I purchased a new card: 2GB but it won't work also. My manual says to clean the contacts but I cleaned the contacts on the card. How do you clean the contacts in the camera or there another problems?

1) Have you formatted the cards?

2) Try the cards in the card reader in your computer to see if they can be read.

3) Try the "switch off camera - remove and replace battery - switch on camera" trick with the original 128 Mb card in place. This will reset the camera's memory.

4) Note the type of card is important - not all cards can be used in a camera (especially some of the latest bigger ones) - check the type of cards supported by your camera.

I found this at the Nikon USA site (note that the 2 GB card is not listed - as said "Cards are not all the same" and use different drivers to operate them):

Question Which Secure Digital Cards are approved for use in the Coolpix 4600/5600? Answer The Nikon Quality Department has tested the following cards and approved their use in the Coolpix 4600/5600:

SD memory cards:
SanDisk 16 MB, 32 MB, 64 MB, 128 MB, 256 MB, 256 MB*, 512 MB, 512MB*, 1 GB
Panasonic 16 MB, 32 MB, 64 MB, 128 MB, 256 MB*, 512 MB*,1 GB
Toshiba 16 MB, 32 MB, 64 MB, 128 MB, 128 MB*, 256 MB, 256 MB*, 512 MB

*High speed type of 10 MB/s or over

Other brands and capacities of cards may work, but Nikon cannot guarantee their operation. Check with the manufacturer of the third-
party card for compatibility information. Nikon recommends keeping one of the approved cards available for troubleshooting.