I just started using my MicroTrack 24/96 this week and updated to Version 1.2.3. Until I bought a SanDisk 1GB CF card I was recording mp3's onto my 64MB card without a problem. Last night I recorded a gig onto the new 1GB card, listened to a bit when I got home and confirmed that I got it recorded. This morning I conected to my Mac for the transfer and the files were there, but they were empty! I am using version 1.2.3. Is it the card's fault or the unit's??