control point can't see MinimServer

[gianluca]

Exactly the same problem as Terry. The log does not report problems. The last three lines of the log are as follows:
[...] Scanning directory Beethoven, Schumann_ Prometeo, triplo concerto, sinfonia n.2
MinimServer[MacBookdiadmin2.station] is running
Startup complete
Still, my Naim network player cannot see Minim, and neither can VLC. The minim icon in the menu bar has white background.

I have installed Plex to see what happens, and that works for both Naim and VLC on the same music library. Still, I would very much prefer a working Minim to Plex.
Minim used to work fine until some time ago. Minim is running on a MacBook Pro, the library is on an external disk. My Java is the latest (10.0.2).