Unable to create mapped drive at root

[hellafax]

When attempting to create a mapped drive within the Plex Media Service Settings tray utility, it does not appear to allow the creation of a mapped drive without a share folder in the UNC.

Example:

• \MyServer\Videos -- GOOD!
• \MyServer\ -- Does not allow save

My media is currently mapped off P:\ which is the root of my NAS.
TV: P:\Shared Videos\TV
Movies: P:\Shared Videos\Movies