Playback question

[pvanosta]

I'm in the process of testing Minimserver on my system, in preparation for an eventual migration away from my trusty OPPO 105 as a primary renderer/streamer.
It says I have 191,000 tracks and 18,000 albums.

I use my OPPO 105 as a player/renderer/whatever you call it. I use the OPPO Media Control app on my Ipad and Iphone to browse and select music for playback.

In the Oppo app itself, I can click the name of my NAS and then navigate the folders etc. (I know how I have categorized and filed my music) until I find the album I want to listen to and then I select the first track and press play. The OPPO will then stream the entire album from that track forward. When I follow the same steps in the OPPO Media Control app but selecting Minimserver instead of the DiskStation, I can also navigate the folders (along with all the other filing options like albums, artists etc), but when I get to the first track I want to listen to, it will only play that track and not the ones after it.
Any ideas why this might be the case?
Thanks.