[Debby]

I am not certain but I believe my library gets messed up whenever I hook my Sony 505 up to Calibre. Or it could be going from a Cybook to Sony. I can transfer books and disconnect, but once I close the library and reopen it the lbrary is typically empty. As in everything gone except a metadata file which is not accurate (size is typically 88kb). In the last case this week, I was able to restore the library (using previous files in windows) but the covers were inaccurate.

This has happened 3 times and after each time the covers are incorrect. In the past I would delete the books and reimport them. As you can imagine as the library grew that became very tedious. I have not noticed a pattern as to why some books and not others.

I actually don't hook up my reader very often, which I why I did not connect events together.

I believe this somehow messing up the metadata file. If I understand dwanthny's method forces a clean rebuilding of the metdata.db

That is why I was anxious to get a backup system in place with multiple metadata.db data versions.

I am going to test hooking up the readers and seeing if I lose everything again.