UPnP/DLNA Server diappears

[Rasil]

I've got a problem with the UPnP/DLNA (using the Server Plugin by Andy).

I have LMS Server running on port 9100 and it's recognized by ALL UPnP devices.
As soon as I start "MediaMonkey" (on port 9200) - LMS disappears from ALL UpnP devices.
If I shut down "Media Monkey" LMS won't come back ...

Same issue with Twonky (on port 9000) and LMS.

BUT:
Twonky and MediaMonkey can run together without any problem, it's only LMS that seems to be "blocked" by them (tried to change the ports, but it didn't help).

Any explanation or even solution for this?
Thanks