Why does it only allow me to download 1 picture at a time? Very Frustrating. It used to allow me to download many at once.
Are you trying to upload images, per your title, or download them? The Library has always only been able to download files on an individual basis. You can upload multiple images (and other file types) at a time when uploading to the Library. Simply select multiple when browsing your computer's files, or click the gray Browse More Files button on the bottom of the uploading screen.