Hey all, just upgraded to WP 3.5.1
Now, when I want to upload or select an image to use for a featured image, this happens.
The new media window is called up correctly.
I can upload a picture just fine, but it displays a 'broken' thumbnail. As well, ALL other images have broken thumbnails - so it then becomes difficult to tell which one I'd like to use, other than file name.
When I save it, the space where it would show the featured image in the post is also a broken thumnail HOWEVER, when I publish the post - the thumbnail shows up and it works perfectly on the front end.
I'm using the Non-Profit theme from Organic Themes.
I have disabled ALL plugins by renaming the plugins folder. Same problem.