Quote:
Originally Posted by ownedbycats
That happens when you have a library that's been opened in 4.23/5.xx and then you open it in an older version. The database isn't quite compatible.
The only way to fix the error is to use Library > Switch/create library to make an empty library (use "copy structure from existing library") and then use "copy to library" to move them over. Then make sure not to open it in a newer version again.
|
Sorry, but that's incorrect. The database only gets changed when using Calibre 5.x. Calibre 4.23 is compatible with the Calibre 5 database but does not change the database if it's not the new version.
The solution (IMHO) is to use cloud storage such as Dropbox and the associated app. Load some ePub and use the cloud app to copy to iBooks.