After clicking the "Save page" button in the "Save your changes" dialog, the spinner (progress bar) appears for a few seconds, then vanishes again. The "Save your changes" dialog remains open and the edit is not saved. 

Here is the output of the JavaScript Console in Chromium:

Uncaught TypeError: Cannot read property 'info' of undefined load.php?debug=false&lang=en&modules=ext.visualEditor.base%2Cmediawiki%2Cvi…ext%7Coojs%7Cunicodejs.wordbreak&skin=vector&version=20130719T023752Z&*:83

ve.init.mw.ViewPageTarget.onSaveError load.php?debug=false&lang=en&modules=ext.visualEditor.base%2Cmediawiki%2Cvi…ext%7Coojs%7Cunicodejs.wordbreak&skin=vector&version=20130719T023752Z&*:83

oo.EventEmitter.emit load.php?debug=false&lang=en&modules=ext.visualEditor.base%2Cmediawiki%2Cvi…xt%7Coojs%7Cunicodejs.wordbreak&skin=vector&version=20130719T023752Z&*:124

ve.init.mw.Target.onSaveError load.php?debug=false&lang=en&modules=ext.visualEditor.base%2Cmediawiki%2Cvi…ext%7Coojs%7Cunicodejs.wordbreak&skin=vector&version=20130719T023752Z&*:16

ve.init.mw.Target.onSave load.php?debug=false&lang=en&modules=ext.visualEditor.base%2Cmediawiki%2Cvi…ext%7Coojs%7Cunicodejs.wordbreak&skin=vector&version=20130719T023752Z&*:16

proxy load.php?debug=false&lang=en&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.…l%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20130719T023752Z:10

fire load.php?debug=false&lang=en&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.…l%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20130719T023752Z:12

self.fireWith load.php?debug=false&lang=en&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.…l%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20130719T023752Z:14

done load.php?debug=false&lang=en&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.…%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20130719T023752Z:119

callback load.php?debug=false&lang=en&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.…%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20130719T023752Z:129


The error is reproducible (with this exact console output) even when I make further edits to the article content or change the edit summary and then go back to the "Save your changes" dialog: I can't save seem to save my edit at all. Haven't yet seen this occur in other articles, though (this was an enwiki article).

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**Version**: unspecified
**Severity**: normal