**Symptom:**
When I start a new post on my Wordpress (example: <http://website.com/wp-admin/post-new.php>), I have the following problems:

1. The tinyMCE editing toolbar is missing, and
2. Text does not appear when typed in the body of the new post

**Attempts:**
Following Wordpress' guidelines, I tried the following without success:

* Deactivate all plugins -- still no edit toolbar.
* Use other browsers -- same error in Chrome, Firefox, and IE on multiple machines.
* Enable SCRIPT\_DEBUG in wp-config.php -- same error.
* Viewing browser errors in Chrome -- see below.

I opened Developer Tools ("F12") in Chrome on the new post page and found the following 3 errors:

1. Failed to load resource: the server responded with a status of 404 (Not Found) -- [wordpress-website]/wp-includes/js/tinymce/tiny\_mce.js?ver=349-20805
2. Uncaught ReferenceError: tinyMCE is not defined -- wp-langs-en.js:1
3. Uncaught ReferenceError: tinyMCE is not defined -- post-new.php:760

**Question:**
What must I do to get the edit toolbar back?