We've just done an upgrade from moodle 2.2 to 2.4.1 (on an xampp, PHP 5.3.5, mysql 5.5.8, Windows Server 2008 R2 environment). I had to turn off the slasharguments setting to get it working after the upgrade.
Uncaught ReferenceError: YUI is not defined view.php:489
So I have tested by enabling online YUI libraries (not ideal, because I want to use https if possible in the near future) and now I get a slightly different error in areas where the filepicker is used (such as submitting an assignment or uploading a file):
(and the file picker doesn't load, it just sits with the loading circle). Strangley, in this configuration of using online YUI libraries, the file picker loads in IE9, but doesn't support drop and drag.
I would like to get the local YUI libraries to work. Can someone suggest a further way of debugging what the problem might be? Thanks in anticipation!