Minim not understanding m3u files

[windbag]

Thanks once again.
Have stopped/reinstalled Minim, getting 252.
No error after rescan
Library appeared in Bubble, and now playing first (test) playlist to the correct receiver.
Getting pretty much all the artwork, but am getting "Adding to Playlist" & wheeling
- maybe still rebuilding after rescan ? - how can you tell if it has finished ?

Has finished "Adding", and other playlists are coming up with most artwork in place.
Starting to look good.

Looking at the log, there are now 3,652 Errors (out of 29k tracks), which seem to be mostly of the type:
"Error: playlist _MainArtists/W,X,Y,Z/Wo-Wu/.../_Playlists/07_Black Cuillin.m3u: no matching file for ../Sound Files/07_Black Cuillin/12_When The Snow Melts.mp3

I suspect these are arising from me having moved a block of artist files inappropriately without making a playlist regen (I stupidly made absolute playlists in the early days).

One possible problem: - the App didn't appear in the Home QNAP home dashboard, on any of the three "pages". It did before. Just gone back and made sure the drop-down menu had "Display on Administrator's Main menu", which it was, but still nowt on the main menu.
So, tried "Every Users menu", but no change.

Problem ?