I've had about 6 calls to Sony about this, Chatted online with them and gone back and forth and gotten nowhere, So I'm hoping you guys (The real pros) can help me out. Sony MZ-NHF800 HI-MD Windows XP Home SP2 I can install Sonicstage 2.1 (original from the CD) and upgrade using the link off Esupport.sony.com to 2.3 and everything is fine. But whenever I upgrade to anything higher 3.0/3.1, it stops recognizing my Hi-MD unit. When I click on the Transfer button at the top it shows ATRAC/MP3 CD and no Hi-MD when the unit is connected. Sony has said that I need to reinstall and go directly to 3.1 (canadian Version) without upgrading to 2.3 first, I've tried everything and nothing works. Chat support has now dished me off to Phone support who closes at 5:00. Has anyone else run into this problem? I get no errors, everything else works great. I would be happy with 2.3, but there are features in 3 that I want to take advantage of. I hope someone else has experienced this previously and has an answer because It's really frustrating. I've had this unit for a week and not been able to use it at all, save for the one time that I transfered a few files using 2.1 Thanks for your help. Jeff.