I have 3 Tivos hooked up to my network and have been able to transfer between them all for a while.
I also have folders shared for music and photos on two different PCs. A couple times this week, however, none of my TiVos can find my music folder.
I go into the Tivo Desktop and make sure I have my Music folder selected. I have also removed "My Music" as I don't keep anything in there.
However, when I go to any of my TiVos and select my media box and browse for music, it shows "My Music" and nothing else. When this happened yesterday I went into the TiVo desktop and removed the folder and re-added it and this seemed to work.
I can still transfer between any of the machines and I'm having no problems with recording. As I write this, I checked my photos and it's doing the same thing - only displaying the default folder on the machine, not my real photo folder I have selected to share.
I've rebooted my PC and made sure everything is OK with the TiVo desktop.