Edit Post Bank Problem
Many WordPress admins face a problem with post editing that make them frustrated.
When they come to edit a page or a post they only see a blank page or missing visiual editor
This can happen If wodpress Site was auto updated, a sript is corubted, a theme or plugin is updated, or for any other not known reason.
If you are one of those post edit is blank, visual editor not working – don’t have any buttons in the HTML pane at all.
Here are some Possible solutions that has been tried by others and solved the problem
1- Clear browser cache
2- Try a different browser
3- Install “Use Google Libraries” plugin
4- Add this line of code to wp-config.php
define( ‘CONCATENATE_SCRIPTS’, false );
5- Check if the file (wp-tinymce.js.gz) exists in
if not upload it using WordPress install files
6- deactive all plugins, then active them one by one ( time cosuming if you have many plugins)
7- Download a refresh version of WordPress from WordPress.org and via ftp replace /wp-includes folder
8- Go to General Settings. Check If there was a colon after the URL in the WordPress Address field and/or the Site Address field. Remove it.
9- Change Word Press theme
10 – If nothing works, then revert your word press to an older version.
11- Worest case: backup you databas abd reinstall wordpress.
Hope this helps