Today, I tried uploading a new book and attempted to add screen shots in Firefox. When I first uploaded some of them, they initially appeared as broken files. So, I saved my book as a draft and logged in using Google Chrome and when I went to edit my book, the screenshots I uploaded appeared normally, but when I tried to add more, they appeared as broken pictures still. I tried deleting the screenshots and readding them, but the same result happened. My book is currently a draft still until I get this issue resolved.

Is anyone else having this problem? Is something going on with the site, or is it some other reason?