E G

Yes – thank you…. worked perfectly.

I really do hope you all get a response. I could not fix this issue, so have rolled back to WordPress 3.3.2…

I have the same issue, although am not using twenty ten theme… I try and add a featured image to a post and the ‘set featured image’ box is now blank, so cannot upload or retrieve images from media library. This has only happened since upgrading to 3.4. I have disabled all plugins to ensure this is not a plugin problem, and the same problem occurs.