I was (still) having an issue getting the ckeditor to work on 1.5, did not figure it out, but I have a solution to get the wyzz edit to work.
Your need to create a file "editor_wyzz.php" and place the following code in the file.
Code:
<?php
$editors_list['WYZZ'] = array('desc' => EDITOR_WYZZ, 'handler' => 'wyzz.php', 'special_needs' => '');
Note that there is NOT a closing PHP tag.
This file should be placed in your admin folder at the following location:
admin\includes\functions\extra_functions
The next time you log into your admin the new editor should be available.