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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