Thanks, @invot, for landing here. I’m not sure, if you’ve noticed that in my initial post, but I’m running this thing on a localhost (for more specs see above).
To your suggestion, I’ve tried that already, even before posting the whole thing here. However, when I’ve tried that with their minified version, the console snapped back, it’s unable to get the 1.4.1 version, which seemed weired, so I reverted back to original file shipped with wp.
Now trying it again with the non-minified, the error changed to this:
Uncaught TypeError: Cannot call method 'on' of undefined media-views.min.js:1
f.controller.State.Backbone.Model.extend._updateMenu media-views.min.js:1
w backbone.min.js:8
g.Events.trigger backbone.min.js:10
f.extend.set backbone.min.js:13
g.Model backbone.min.js:12
f.controller.State.Backbone.Model.extend.constructor media-views.min.js:1
d backbone.min.js:41
f.view.MediaFrame.Post.f.view.MediaFrame.Select.extend.createStates media-views.min.js:1
f.view.MediaFrame.Select.f.view.MediaFrame.extend.initialize media-views.min.js:1
f.view.MediaFrame.Post.f.view.MediaFrame.Select.extend.initialize media-views.min.js:1
g.View backbone.min.js:36
f.View.Backbone.View.extend.constructor media-views.min.js:1
d backbone.min.js:41
d backbone.min.js:41
d backbone.min.js:41
d backbone.min.js:41
wp.media media-models.min.js:1
wp.media.editor.add media-editor.min.js:1
wp.media.editor.open media-editor.min.js:1
(anonymous function) media-editor.min.js:1
jQuery.event.dispatch jquery.js:3045
elemData.handle
Also there’s been this line in java console since the very beginning:
JQMIGRATE: jQuery.fn.live() is deprecated jquery-migrate.js:29