I have the exact same problem with my new NW-S705F. And I already tried heck a lot of stuff with deinstaling, reinstalling and everything else I found on the internet. But non of it seems to work. I am now using 'VAIO Music Transfer' (that very simple drag&drop program) so I can at least get some music on my player. But I payed for that player and that software so I want to be able to use it properly!