[wp-hackers] Serious problem with editor

[Andrew Ozz]

Mário Gamito wrote:
> Suddenly, without any explanation, I can't switch from Visual to HTML
> mode in the writing articles editor.
> I've already restored my backup, but the problem persists, both in FF and in IE.
> 
> I have JavaScript Enabled, of course.
> 
> In IE, I can see this error:
> 
> http://www.absinto.org/images/editor.jpg

Seems like wp-admin/js/editor.js is missing or corrupted. Also check the 
error in FF or Opera, IE doesn't really give much info.