Roon Core installed on Innuos Zenith Mk3 (versions on screen shots attached). Use MacBook Air MacOS Sequoia 15.7.1 or IPhone SE.
Playing music stops frequent*: Error message: Waiting For Your Roon Server or Select an Audio Zone.
*± every 2 minutes (less than 1 song).
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Hi Marc, I’m on the same build, same issue. I raised it last week along with a bunch of other people. multiple restarts doesn’t resolve the issue so I guess we’re waiting for an update release.
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Hi @Marc_De_Mey,
Thank you for your post.
Diagnostic logs show an M Scalar Zone returning an unexpected short read to the RAATServer instance in the Innuos when RAAT was preparing a track transition. Playback stopped between tracks instead of proceeding through the queue. RAATServer itself logs an alsa teardown around that time, as if the device were disconnected and reconnected.
Around the same time, the Macbook Air Roon instance loses sight of the server and reconnects after a few seconds. This would generate the “Waiting for RoonServer” message in most cases, but logs from the Roon Remote haven’t yet reached our servers to confirm.
We’d like to pin down whether or not these two symptoms are associated to ensure any upcoming fixes involving network discovery will be relevant to your situation.
What is the network pathway serving the Macbook and the Innuos? Do you rely on a mesh network with multiple nodes, or are RoonServer and Roon Remote connected to the same router without any additional hardware?
Lastly, do you encounter playback dropouts with every Zone? Do tracks ever fail to play when you try to initiate playback?
We’ll watch for your response. Thank you!
Your questions exceed my IT knowledge but I’ll try my best. See pictures attached.
In the garage I have the Proximus B-Box where internet comes in. In the house I have 2 wifi routers and 1 connection over the electricity cables. In the mancave I have the same on the receiving end. My Macbook connects to whatever is closest. This set up has not changed since the initial install 4 years ago.
Hey @Marc_De_Mey,
Thanks for the additional information!
Do you notice the issue behavior when connected to one of the specific nodes? It would be good to try and pin down any points of weaker bandwidth - let me know if you’re able to test this.
Are you able to provide more details around what @connor has asked above?
Thank you, Marc! 
I replaced both PLC’s and this seems to solve the problem. FYI I noticed the PLC’s flicked between “blue” and “red”, the one in the garage is accessible but not looked at, the one in the mancave is obstructed by too much stuff (flatscreen, a cable mountain…) so I could not compare to previously. I will ask for advice how to make I can play music even if everything drops out except electricty of course. I was the opinion that once started Roon should play the entire album/playlist since the internet has nothing to do with it.
Update after a few hours playing the last 2 days with new PLC’s. After playing a few hours on 4 sessions or so: the error has occurred 4 times. It has improved, but the root cause imho has not been tackled.
Hi @Marc_De_Mey,
This is partially true - If the music is stored locally, yes, once playback starts, Roon does not rely on the internet.
If the music is streaming (e.g., from Qobuz, TIDAL, or internet radio): No — Roon still needs an internet connection for playback.
If you could, please share the specific track name when the issue occurs.
Does it happen no matter the track resolution? Try playing a lower resolution batch of tracks and let me know how things perform.
We’ll be on standby for your reply, thank you! 
Sorry for not writing I only play music stored on the Innuos (my FLAC ripped CD and purchased digital music (Apple MP4, Bandcamp FLAC…). No streaming here. And of course I do not expect Live Radio or streaming services to work when the internet is down or jiffy.
Hello @Marc_De_Mey
It would be extremely helpful if you could share the exact timestamp and track name when the issue occurs, as requested by @benjamin.
Additional side note, we do not recommend using the powerline adapters accordingly to our network best practices described here.
Dear Vadim, I’ will ask an IT-savvy friend. I don’t know what timestamp means in this context: clock’s time when it happens, or what time on the song. Since it happened with tracks that have played before (one or multiple times, I checked the Play count) and on replays I can not replicate the error. So imho there is nothing wrong with the FLAC files. After the install by my HiFi-shop (he connected to the PLC etc.) ± 4 years ago, it worked fine till 2-3 weeks ago. You can do me a favour and tell where and how to look at log files on the MacBook that should be forwarded.
Hi @Marc_De_Mey,
We were able to review a fresh diagnostic report from your Roon Server, and saw error traces that align with a known issue we’re currently working on.
It involves devices randomly dropping connection and disappearing from Roon, but eventually are able to reconnect.
We have a potential fix for this issue over on our Early Access branch of Roon. If you’re interested in giving it a try, I’ll share a link below to learn more about it.
If not, no worries! We’ll be merging this fix over to our normal Production version of Roon within the next update or so.
Let me know, thanks, Marc! 
I’m looking forward to the next official release, hopefully not too long. I’d actually prefer to revert to a previous release which did not have this issue (if it works that way). Meanwhile I’ll spin discs in the old fashioned way. I must say I will investigate in a solution that I can play my stored music files without fail. Acces, search and play music with Roon if possible, without Roon necessary. I dumped my Bluesound Vault 2 after ripping my ±4000 CD’s -not user friendly (my wife couldn’t search or play a song or playlist, editing albums, tracks… was next to impossible…). I Ripped my CD’s for a second time on Innuos/ROON -a few months of work. Hope you understand my trust in Roon is under question.
Hey @Marc_De_Mey,
It shouldn’t be very long at all - thanks for your patience in the meantime!
Hi @Marc_De_Mey,
We’ve made a few updates to our Early Access version of Roon, but haven’t migrated the updates over to the Production version yet. I’m sorry for the wait here - and really appreciate the long wait you’ve endured so far.
Thanks for the update and offer. I prefer to wait (a few weeks I guess/hope) for the official version.
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Hey @Marc_De_Mey,
Thanks again for your patience here! Could you please reboot your Roon Server twice, and then see if you still run into the same issues?
Dear Benjamin,
Restarting 2x indeed solved the issue. I hope this 2x restart solves the problem on the next occasion I can’t play music in a decent way. As you can imagine I never want to face the time I cant’t play music although everything is stored and steered local.
Thanks for your help.
Marc
Hello @Marc_De_Mey ,
Glad to hear that the double reboot helped. Please let us know if you experience this issue again.
I’ve played 1 week without errors. I resumed the weekly back up and this time it took more than 12 hours vs anything between 5-20 minutes. fyi: I added 12 ripped albums to the HD which is 63% out of 4TB, on previous back-ups such additions impacted/increased the back-up time but not dramatically. It looks like “something” has been rebuild.