Daten ohne Sicherung kopieren - Datenbankfehler

Hallo, ich musste eine Win10 Neuinstallation machen und kann leider nur noch auf die Dateien der alten Platte zugreifen, habe das Appdata\Roaming\eM Client Verzeichniss kopiert und bekomme folgenden Datenbankfehler beim starten:

Microsoft.Data.Sqlite.SqliteException (0x80004005): SQLite Error 26: ‘file is not a database’.
at Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(Int32 rc, sqlite3 db)
at Microsoft.Data.Sqlite.SqliteCommand.PrepareAndEnumerateStatements(Stopwatch timer)+MoveNext()
at Microsoft.Data.Sqlite.SqliteCommand.GetStatements(Stopwatch timer)+MoveNext()
at Microsoft.Data.Sqlite.SqliteDataReader.NextResult()
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader(CommandBehavior behavior)
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader()
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteNonQuery()
at MailClient.Storage.Data.DataStore.GetConnectionInternal(String relativeName, Boolean privateConnection)
at MailClient.DbRepair.CorruptionChecker.CheckCorruption(RepairOptions repairOptions, CancellationToken token)
at MailClient.DbRepair.CheckingProcess.Check(CancellationToken token)
Data:
databaseFile: 997c2bbf-3cf2-44f7-a06f-c08d5edae75b\8a3c3bd7-4d30-4b0c-894e-b9a738079a78\folders.dat

Eine Sicherung habe ich leider nicht, gibt es vll. eine Möglichkeit mir zu helfen? Besten Gruß | Chris Schumach (ps. EM-Client Version 8.2)

eM Client is not recognising that file as a valid database file. It is possible it was changed by another app on the source, or was not copied correctly or changed by another app since it was copied across. Or it is just corrupt.

You can delete the \997c2bbf-3cf2-44f7-a06f-c08d5edae75b\8a3c3bd7-4d30-4b0c-894e-b9a738079a78\ folder and restart eM Client. If this is an IMAP or Exchange account the folder will be recreated when eM Client syncs with the server. If it is a POP3 account, the data may be lost.

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