Linn does not see Melco NAS

[simoncn]

The problems with the Linn not seeing the MinimServer database is caused by a UPnP discovery problem with your network. These problems can be tricky to solve. See this page for more information about this issue.

As a first step, try powering all your network-attached devices (including the router and any switches) off and on.

If this doesn't help, the problem could be caused by your router having IGMP snooping enabled. What router are you using? Does it have a setting to disable IGMP snooping?