Last modified: 2014-02-12 23:32:52 UTC
On a fresh 1.20.1 install any change to the special:preferences is not saved. There is no visible error shown. There are more people who suffer this. see: http://www.mediawiki.org/wiki/Project:Support_desk#User_preferences_won.27t_save_.28no_error.29_718 Try out on: http://blechschaden.bplaced.net/wiki/index.php?title=Spezial:Version
*** This bug has been marked as a duplicate of bug 42592 ***