Getting back to reply #2...........
bryant507:
I reformated the scard by computer.Fat32.
I used a SanDisk 2GB card.
and use the standard SD library
I had a problem with my 2Gb card initialising but all the hardware had worked before so there was no reason to suspect it. Putting the card in the PC, I saw it was formatted FAT32.
I reformatted to FAT.
It now works fine.