Nucleus One fails to import FLAC files after manual transfer (ref#NBWWPX)

Hi @Michael_Riggs,

Thank you for your detailed description of your troubleshooting so far.

The important distinction is between how Roon “imports” files and how it “watches” storage. These are two different mechanisms within RoonOS and you’ve accidentally ended up straddling both.

When you drag files into My Albums, Roon doesn’t just copy them like Windows. It uploads them through Roon’s managed import system, which stores files under InternalStorage/Roon Imports/… and immediately tries to analyze and add them to the database as a single transaction. After you deleted the multi-disc set, that import pipeline appears to have gotten stuck, which is why subsequent drag-and-drop attempts never complete and sit spinning on the first track.

This is what other users were referring to here in your previous thread.

The Roon Imports folder (and its MICHAEL-PC subfolders) is not a watched music location. It’s an internal staging area that Roon only uses when it performs an import. Manually copying or moving files anywhere inside that folder will not trigger a scan, which is why nothing you placed there ever appeared in My Albums.

The fix is to bypass the importer entirely by adding a watched folder and then actually force a manual rescan:

  1. Create a normal music folder on the Nucleus, e.g. InternalStorage/Music.
  2. In Settings → Storage, add that folder as a watched location.
  3. Copy your FLAC files directly into that folder from File Explorer.
  4. Let Roon rescan (or trigger a manual rescan).
If you don’t see the content imported, confirm whether you see the Nucleus internal storage listed in your Watched Folders.

In the previous thread, it looks like you performed step 1 and step 3, but without adding the location as a Watched Folder (step 2) and forcing the rescan in Roon Settings (step 4), the Nucleus won’t know to look for and ingest the newly copied music.

Please let us know if this helps.