I just encountered the very distubing fact that the keepass databases are no longer showing up in each of two separate installations. I have a backup of the database with all of my passwords. To restore the database via Import>database.kdbx, I had to create a new blank database in keepass using the same master password as the database I'm trying to import, which I have written down. However when I try importing it, I get "failed to load the specified file. The composite key is invalid". I have tried...