unexpected library wipe out

Hello Bruno, Last Saturday, I did a musical performance at friends' place using the BETA version (I stand by my choice, but sometimes you have to make sacrifices for the cause :).. The problem: during my performance, suddenly, I noticed that the library was empty and all my playlists were gone! Here is my original setup No idea what happened! Today I recovered it with Time Machine.

If I understood well, when I need to recover My library setup from time Machine, I need to copy 3 files :*.SQL, *SQL-SHM and *.SQL_WAL ..By the way, what the purpose (contens) of those 3 files?

Thanks for your help,

Regards,

Alain

https://stackoverflow.com/questions/7778723/what-are-the-db-shm-and-db-wal-extensions-in-sqlite-databases

Did you delete the corrupted files? It would have been interesting to look at them.

I can send you the files backup before the crash ! I had it on my Time machine QMidi_Library.sql-walQMidi_Library.sql-shmQMidi_Library.sql