Sandisk Digital Photo Viewer wont read SD card

Our San Disk digital photo viewer for TV will not read any SD card…any ideas? Reads a CF card just fine.

what is the capacity of the SD cards? if i recall correctly it is limited to 2GB cards. possibly even 1GB. 

I never been faced these types of problem, Have you tried PhotoViewerPro:  photo software… It works wonder for photo viewers.