When trying to upload an image to an upgraded mediawiki i get the message Interner Fehler Das Verzeichnis "images/public/temp/9/9f" konnte nicht angelegt werden.

Internal error the directory "public/temp/9/9f" could not be created

On the old Mediawiki (version 1.7.1) i dont have a "images/public/" directory. Did there change something in mediawiki ?

THX, HeinzJ