OSX- Not able to open root directory in SAMBA file share
At the university I work at, I ran into the issue with Mac users where they could connect to a SMB share folder within a shared directory, but not the root of the drive until I set the user permissions on the share's root to at least RO for the credentials they used to connect. Are you sure that you have the correct user and share permissions set on the root to connect at that level?