I recently upgraded to WP2.8 and not exactly sure when it broke (may have been at the upgrade or a few days later) but having problem creating new page or post. When I go to the new post ../new-post.php page, I can write in the WYSiWYG box, but cannot switch over to the HTML tab at all (no functionality there), if I save as draft or publish, everything I've written is gone except for the title.
In IE, code check states the following error:
Line: 9, Char: 3963, Error: 'edButtons.length' is null or not an object, Code:0, URL: XXX.../new-post.php
Same error on New-Page.php (except for URL), plus 1 more:
Line: 8, Char: 1, Error: Object Expected, Code:0, URL: XXX.../new-page.php