Treo 600 will not read SD Card

[tical]

I have tried a 64 MB SD card and a 1GB SD card in a few TREO 600, and It will not read them. any ideas why. other device reads the card well. I use the card to move data all the time. I have formatted the card in the TREO, it detects the card, but just does not display the filres on the card.

Please help