Details
P3: Somewhat important Description
On startup Neptune reports it cannot access multiple PNG files:
[WARN | am.qml] QML Image: Cannot open: file:///Users/vladimir/Music/Kuschelrock 29 (2015)/16 - Chasing Cars.mp3.png [AlbumArtPanel.qml:94] [WARN | am.qml] QML Image: Cannot open: file:///Users/vladimir/Music/Kuschelrock 29 (2015)/17 - All We Are.mp3.png [AlbumArtPanel.qml:94] [WARN | am.qml] QML Image: Cannot open: file:///Users/vladimir/Music/Kuschelrock 29 (2015)/12 - Man On A Wire.mp3.png [AlbumArtPanel.qml:94] [WARN | am.qml] QML Image: Cannot open: file:///Users/vladimir/Music/Kuschelrock 29 (2015)/18 - Lullabye (Goodnight, My Angel) (Album Version).mp3.png
The files are related to music, but they are not music files as such. They and their parent folder do not exist in the file system anymore.
As a user I would expect Neptune to detect such situations on the first start after deletion and rescan the location of the music files.