I am just the opposite. When setting up file paths, I instinctively use the UNC. IT departments are not very consistent with pathing so I start with the UNC. But the UNC path instinct bit me with the CS ODBC, go figure. I just reinstalled it for my v2015 installation (per the installation guide, it should be in the current version of Sage, not the previous one). The install guide even specified the UNC path so I am holding my breath that it starts up the next time the server is rebooted.