Couple of idle observations, ignore if irrelevant:
1. Linux file systems I've used (Ext3/4, NFS etc) are case sensitive. i.e. 'File.Txt', 'file.txt' and 'FILE.TXT' are distinct. In the log I see:
Code:
Attaching to New Source Library: /home/susan/calibre/languageandwriting/metadata.db
And a further down I see:
Code:
source library path added to set: /home/susan/Calibre/LanguageandWriting
2. I recall seeing problems (20+ years ago) with file names that had 'foreign' characters on an IBM Linux system - and if memory serves me right IBM had its fingers in the btfs pie.
BR