On the same machine the mp2 is on? If so I can test that in a little bit.
When you go into Add Shares, are you choosing Local or Global?It's on my local machine and it's shares and not drives. E.g. \\SERVER\Videos
S:\Temp\>NetEnumTest.exe localhost
Enumerating shares of server 'localhost'
Type: Special IsFS: True UNC: \\LOCALHOST\ADMIN$
Type: Special IsFS: True UNC: \\LOCALHOST\C$
Type: Special IsFS: True UNC: \\LOCALHOST\D$
Type: Special IsFS: True UNC: \\LOCALHOST\I$
Type: IPC, Special IsFS: False UNC: \\LOCALHOST\IPC$
Type: Special IsFS: True UNC: \\LOCALHOST\R$
Type: Special IsFS: True UNC: \\LOCALHOST\S$
Type: Special IsFS: True UNC: \\LOCALHOST\T$
Type: Special IsFS: True UNC: \\LOCALHOST\U$
Type: Special IsFS: True UNC: \\LOCALHOST\X$
C:\>NetEnumTest.exe localhost
Enumerating shares of server 'localhost'
Type: Special IsFS: True UNC: \\LOCALHOST\ADMIN$
Type: Special IsFS: True UNC: \\LOCALHOST\C$
Type: Special IsFS: True UNC: \\LOCALHOST\D$
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Downloads
Type: Special IsFS: True UNC: \\LOCALHOST\E$
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Egna Filmer
Type: Special IsFS: True UNC: \\LOCALHOST\F$
Type: Special IsFS: True UNC: \\LOCALHOST\G$
Type: IPC, Special IsFS: False UNC: \\LOCALHOST\IPC$
Type: Disk IsFS: True UNC: \\LOCALHOST\LocalPictures
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Music
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Photos
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Public
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Recorded TV
Type: Disk IsFS: True UNC: \\LOCALHOST\Recordings
Type: Special IsFS: True UNC: \\LOCALHOST\S$
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Software
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\TV Series
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Users
Type: 1073741824 IsFS: True UNC: \\LOCALHOST\Videos