I've got a problem with Kareha. I cannot use the delete file function. It just does not work. I want to delete an image without deleting a person's post but nothing happens, the picture is still there. I've tried all the browsers, that doesn't seem to be the problem. It doesn't even give me any errors, I click on 'delete file' and it does something and then it reloads the admin page but the image I wanted to delete is still there...