Last modified: 2014-06-17 13:02:44 UTC
The migration of I18n from php to json must have been unsuccessful. After upgrading to MW 1.23.0 none of this extension's system messages gets loaded. See the "Other special pages" section at the very bottom of "Special:SpecialPages" [1]. I verified this on a second local MW instance. [1] https://wikiapiary.com/wiki/Special:SpecialPages
Adding Siebrand since he will probably have the deepest insight in what is happening.
Change 140096 had a related patch set uploaded by Siebrand: Fix incorrect path in $wgMessagesDir https://gerrit.wikimedia.org/r/140096
Oops... Submitted and merged a change that should resolve this issue. Sorry.
Change 140096 merged by Siebrand: Fix incorrect path in $wgMessagesDirs https://gerrit.wikimedia.org/r/140096
Change 140097 had a related patch set uploaded by Siebrand: Fix incorrect path in $wgMessagesDirs https://gerrit.wikimedia.org/r/140097
Change 140097 merged by Yaron Koren: Fix incorrect path in $wgMessagesDirs https://gerrit.wikimedia.org/r/140097
No worries, mistakes may happen. Thanks for your fast action which solved the issue (tested it). Probably Yaron will do a 0.5.1 release to make sure that everybody knows about the need to upgrade.
kgh - oh, that's a good idea.