hi,
you have any plugins installed that interfere with the editor ? look for plugins at "editor_toolbar_on" hook your missing images well check two things
1) check in each of the styles of you use the editor images directory is correct
2) if the above is correct and the image are there try to access them with a direct url to test and see if you have any permissions problems
3) yes to the above ? then fix the permissions problems remember that hotlinking protection on your images could accidently cause a problem like this
4) if you have plugins at the editor hooks try to temporarly disable the plugin system to check and see if they are the problem cause in /includes/config.php right after the "<?php
PHP Code:
define('DISALE_HOOKS',1);
5) last rescue this query will turn on wysiwyg for everybody
[sql]
UPDATE user SET showvbcode=2;
[/sql]
keep table prefixes in mind if you have one ....