I am getting the same issue as CorinneUKVA had (but with Twenty Thirteen theme and WP 3.8).
I have tried deactivating the Plugins and also changing file permissions to the relevant directories as advised but I can’t even see the images in the WordPress dashboard.
My website
http://www.willbeck.com/
Any help here would be appreciated.
Thanks very much shamane.
I have hidden the files as you suggested.
I’m getting the same problem as wewie and schamane. I tried all the suggestions in the list.
I get the same error as schamane above. Any image uploaded after the 3.7.1 update doesn’t appear in the WordPress dashboard (only after clicking the image in Media Library and then Edit Image can I see the image.
I tried changing the permissions as schamane suggested and that worked, though I’m concerned about the safety of this.
My website is http://www.willbeck.com/ and the test post is from after the update.