Can't Read My SD Card, but the Camera Can
 

The SD card in my camera has always worked fine...I picked up my camera for the first time in a couple weeks...took some pictures etc...no problems...reviewing my pictures on the camera, no problem.

However, when i connect the camera to the computer to transfer them over, it doesn't read the pictures on the SD card.

Tried using the built in SD slot in my laptop - cant read it either.

Anyone have any ideas?

what kinda of camera do you have? maybe the card isnt formatted in a type that the computer can read.

its a D90...
its worked fine for the past 3 months...and then all of a sudden today it doesnt read in any card reader or when using the camera as the reader...

However, I can still preview the pictures on the LCD

try any other computers?

Are you using a SD or SDHC card? I'm using a 8GB SDHC and it can't be detected by my laptop's built-in card reader (Regular SD cards can) but when I put the SDHC into the card reader in my all-in-one printer it works fine.

Try a SDHC card reader.