MS runs on PWD but not Lumin

[Pale Rider]

Hi All:

This may not be an MS problem, and if that turns out to be the case, I will look elsewhere, but I wanted to post and see if anyone had thoughts. My MS is running on a Synology 411+, and very well. It serves up files to my PS Audio PWD MkII darn close to flawlessly. I am able to control it fine through MW, and I am able to play files using the PSA eLyric iPad and iPhone apps. So, my problem is likely not my MS, but I want to be sure.

Today, I installed my brand-new Lumin [ a lovely piece of equipment] into my system. It is connected via Ethernet to the same Airport Extreme bridge as the PWD. It is connected to the same Zektor MAS7.1 switch as the PWD.

When I started up the Lumin, it powered up fine. When I started the Lumin iPad app, it located the MS immediately, and it also located the Lumin itself. I am able to turn the Lumin on and off from the iPad app. I am able to select tracks into a playlist. Cover art is good, and search works well. But when I try to play files, the Lumin just sits there; the track name shows in its window, but play never commences. If I assemble a playlist, and press play, the Lumin cycles quickly through the files as if there is no content in them. The names of the files appear in the Lumin device window, but it goes right through the list without actually playing any content.

I have a feeling I am missing something obvious here, but for the life of me, I don't know what it is.

TIA for any suggestions or questions. And again, if I should seek my answer elsewhere, just let me know.