WordPress errors on inserting images

Today, without changing anything on our WordPress installation we received the below error while inserting images (uploading works, selecting also, but images don’t get inserted into the post);

Permission denied to get property Window.tinyMCE

Looking trough the web we found the following fix;

1. Open up the file “wp-admin/js/media-upload.js”
2. Change line 6 from “win.tinyMCE” to “parent.tinyMCE”

Make sure to clear the cache of your browser, before trying to insert images again.

Don’t know why this error occured, but this fix resolved it.

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