New
#11
have had this problem and the only way out was to create homegroup with a temporary user and then share libraries of your main account. You can delete the temp. user later on.
I can consistently reproduce this problem by placing my user profile folder to a different partition,
C:\ for Windows etc.
D:\Username (ProfilesDirectory="D:\" in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList)
Definite bug