This has been driving me nuts. A source file Acoustic_2025-12-28_1238.wav was imported into the session, and I had been working on it since then, over a number of days and backing up. Today, none of the session files that contain this source will open, including backups. No crash involved.
As can be seen below, Ardour is complaining about not being able to find the source id.
- The three channels are in the interchange directory, and are valid wave files.
- Tried various versions of Ardour (7/8/9), including the exact version that was last used to edit.
- Tried editing the session file. Removing the
<Region>section gives the same error. Removing the associated<Playlist>causes a segfault. - Tried changing source id, but from what I can see, the source id is not mismatched.
- Tried a clean session and the offending file imports and the session reopens just dandy.
- Tested other projects with multi-channel files and no problems.
Anyone care to take a look at the session file?
https://my.opendesktop.org/s/ZAjKJmApJJi2zKa
Even just getting rid of this source/playlist would be fine, as it was just a straight import with no edits.
Console output:
ERROR: Session: XMLNode describing a AudioRegion references an unknown source id =4659154
ERROR: Session: cannot create Region from XML description. Can not load state for region 'Acoustic_2025-12-28_1238'
ERROR: Session: XMLNode describing a AudioRegion references an unknown source id =4659154
ERROR: Playlist: cannot create region from XML
ERROR: Session: cannot create Playlist from XML description.
ERROR: Session: failed to load active playlists
ERROR: Could not set session state from XML
One extra line appears in the error popup:
ERROR: Session: cannot create Region from XML description. Can not load state for region 'Acoustic_2025-12-28_1238'