I realise that the problem of the NDS refusing to play complete albums, both on Tidal and UPnP, has been reported before, but I'd like to flag it up once again, from a slightly different viewpoint.
When using the Naim app, on my iPad, I noticed that selecting, say, the first track on a album, then moving into the "now playing" page, the track in question was not shown there as playing, though the music was loud and clear.
I gather that the problem arises when one's system is switched on all the time, as mine is, and the quick fix for either of the above issues is to simply power down and reboot the NDS.
Apologies for repeating this information, but if doing so helps prevent someone out there from a head scratching session, then my work here is done.
Dave. 
Posted on: 30 June 2016 by Gandalf_fi
I have the same issue, off/on NDS helps. Using iPad & Asset. Wondering if this is somehow related Naim App SW bug & playlist full type of thing?
Anyway this is a clear bug, >20 reboots in total behind now. if I calculate mean time between failure (MTBF) it is not what supposed to be.
Posted on: 01 July 2016 by Gandalf_fi
Server is up & running + other devices are working well without this type of issues + zero Network issues.
When designing Apps there are two important issues to take care in SW development:
1) it needs to be designed to be robust, takes it into consideration even if some solution spec is not perfect, in this case it could mean to work with Asset, Twonky, Minim for example
2) if some weird things happens, recovery needs to be done, App can see that it cannot go to the playlist anymore, & buttons do not work, this means typically actions like: silent cache cleaning, silent app boot, silent NDS SW part boot so what it could be seen in customer 10 sec delay but everything works suddenly & NDS reboot is not needed
Just my 2 cents...
