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My archive.sh doesn't retrieve the authkey in a proper way. I think that this has something to do with the superuser login name.
Username plain: Ren Lux
Username config: RenÃ© Lux
The problem is temporary fixed by hardcoding it.
(In ) Fixes #1256 Installer now checks that the super user is a valid login string (no special letters, no space, etc.)