"Unexpected number of remote volumes detected: 0!"-error

Hmm, also that backup (no exclusions, just my home folder, other destination-folder) finished with errors unfortunately:

disk i/o error

Fatal error
System.Data.SQLite.SQLiteException (0x80004005): disk I/O error

disk I/O error

at System.Data.SQLite.SQLite3.Reset(SQLiteStatement stmt)

at System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt)

at System.Data.SQLite.SQLiteDataReader.NextResult()

at System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)

at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)

at System.Data.SQLite.SQLiteCommand.ExecuteNonQuery(CommandBehavior behavior)

at Duplicati.Library.Main.BasicResults.LogDbMessage(String type, String message, Exception ex)

at Duplicati.Library.Main.BasicResults.AddWarning(String message, Exception ex)

at Duplicati.Library.Main.Operation.BackupHandler.HandleFilesystemEntry(ISnapshotService snapshot, BackendManager backend, String path, FileAttributes attributes)

at Duplicati.Library.Main.Operation.BackupHandler.RunMainOperation(ISnapshotService snapshot, BackendManager backend)

at Duplicati.Library.Main.Operation.BackupHandler.Run(String[] sources, IFilter filter)

And some other sqlite errors which are related i think. Before the sqlite error, I get quite a bit of “File in use”, so it really seems it is not using VSS at all. Is there somewhere I can check that?