HOW WEIRD IS THIS!!!
under Users / Your Profile if you untick the “Use the visual editor when writing” it seems to work…
Someone please try and explain this to me, please…
Found out about it here…
http://www.mydigitallife.info/2006/01/20/wordpress-wysiwyg-visual-editor-not-working-or-not-appearing/
I to have the same problem, with the send to editor button, i changed the folders properties so they can be writting on and the numeric value to 777 witch allows me to upload them but cant send them to the editor.
If i find the solution ill post it to you guys.
Good luck and hope we find it soon.
J