[vlad59]

Originally Posted by micheljo

Thanks for your response
Finally, COPS 5.0 works
During data synchronization with Calibre directory, the metadata.db was corrupted, Calibre/metadata.db also.
Now, I rebuild my Calibre library book by book, and each day I save it in my COPS directory.
It's a very long way, but I can control books metadata , and add missing.
Synchronization between computer and Nas is not a good idea for Calibre and Cops, now, i use SyncBack with only save configuration to copy data in Calibre library and paste it in Cops data library.
I have tested also CloudStation, but when I added a lot of books in Calibre, it's metadata.db file changed, and failures appeared.

Corruption usually appear when you try to update the same database with two Calibre or Cloudstation try to update the metadata.db and Calibre is started.

My Calibre directory is not synchronized automatically, I start it manually when I update it.

Originally Posted by micheljo

In COPS, I want to add custom columns like "A_Lire_Michel" feed by the same custom columns in Calibre.
Is it easy?

So far only some type of custom columns are handled but it should work.

Originally Posted by micheljo

PS: as a lot of French people, my English is not perfect, sorry!

I'm french so I know .