Frank Bergmann - 2018-08-30

You need to restore with exactly the same version of ]po[ that you used initially. Otherwise this would be an upgrade, which (in case of upgrade to V5.0) requires a support contract, because the upgrade scripts are not public anymore.

You didn't specify the version of the installer, so I can't diagnose why the backup paage doesn't work. But I'm sure there is no "Gah." in any of ]po[ error messages...

You don't need a backup page for restore. Please search for "restore" and "backup" on www.project-open.com. ]po[ backup is just a PostgreSQL dump.

Again, you have to use the same version of ]po[ as you had before.

Good luck
Frank