I updated my main site to WP3.5 on Wednesday and all appeared to be fine. I backed up the database and received the confirmation message that all was good. However, when I subsequently tried to edit an existing post or page the text editor (in both visual and html tabs) is completely blank. Also, if i try to delete and/or drag a widget into the sidebar the function won't work.
I then restored a full back up I had pre-WP3.5 which functioned perfectly well, so I did another update and exactly the same has happened - blank text editor and I can't manipulate widgets.
I have disabled all plugins and it made no difference.
Any ideas, folks?
The site is http://www.davcomedia.co.uk if you're interested.