princessj

Please note if the No. 1 option does not work for you, consider replacing the whole JS folder(as a whole) as it did work for me on the other sites (that did not work with no. 1 option).

Thanks

Dear All,

I too experienced these problems when I upgraded to WP 4.1.1 version.

This is the solution I got so far. I downloaded the WP4.1.1 version from www.ads-software.com, opened its /wp-includes/js/tinymce/ folder and compressed to .zip
On the cpanel I renamed the tinymyce folder to tinymyce2 and uploaded the zipped tinymyce file.
After decompressing it, I refreshed both the cpanel window and one of the website( I manage several) and Viola! the Visual Editor was visible again on the posts. Also remember to delete the tinymyce2 folder on the cpanel once this works for you.

Or you can choose to upload the JS folder as a whole too.
I hope this helps someone else.

PS: I had to give step by step illustration so that those who are not familiar with this can get it.
Thanks.

I am getting the same problem. I installed the CKEditor version 4.4.5 after the WP upgrade (4.1.1) problem experienced with default editor. It has not worked with most of the departments that I am managing. It has worked in only one department site..I checked the settings and they are similar.
Opening with Chrome I get this error message on console

Uncaught TypeError: undefined is not a function
load-scripts.php?c=0&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,suggest,wp-ajax-respons…:867

Kindly assist.