Originally Posted by
mville
Assuming the "Can't Play.. Track Skipped" error is random and Asset UPnP is configured correctly, there are 4 potential problems here.
Problem 1. Software is interfering with the communication of the NAIM and Asset UPnP e.g. your security software.
Problem 2. You have a problem with your network.
Problem 3. The DLNA client software (Naim app) has bugs.
Problem 4. Asset UPnP server software has bugs.
Sadly, problems 1 and 2 are not uncommon. Just browse these forums and see how often these issues arise. First, temporarily disable the security software and see if the problem still exists.
Users often have success by just rebooting the PCs, devices, routers involved, try this also.
As I understand it, your audio library and Asset UPnP reside on the MacBook. To rule out the network and the Naim app, you could install other DLNA client software on the MacBook and try playing tracks via Asset on the MacBook only. If this works OK, then the issue is probably with the network or the NAIM app.
If you are not experienced with the security software on the Mac or troubleshooting network issues, you may have to find someone who is.
What is interesting is when these issues arise, the first thought is Asset UPnP is the culprit. In my experience and on these forums the problems are usually problems 1 and 2, followed by problem 3 and then problem 4.