I've asked on IRC. They correctly found out that /etc/apt/apt.conf.d/70debconf which calls dpkg-preconfigure probably triggers this. I.e. debconf and therefore the .config file can be called before files have been put into place.
That still doesn't explain why David's change *in postinst* apparently made the error go away. Can someone check on a fresh system where there certainly is no /usr/share/phpbb3/ ? -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
