http://community.wd.com/t5/WD-TV-Live-Hub-Discussions/transferring-issue/m-p/667695/highlight/true
tried to reply to this thread but it wont let me .
im having the same problems, followed all the instructions on the page . tvhub works on my girfriends laptop for transferring files but not mine till i reinstalled windows (7)
also tried the wd link which used to work but still not letting me map the drive so i can add files to the hub .