For those of you on Safari:
go to Preferences (Safari>Preferences)
click the 'Advanced" icon
check the box: "Show Develop menu in menu bar"
close that window.
go to the Google page, then go to the new "Develop" menu (in Safari) and pull it down to "User Agent", then on down to "Firefox". The page will reload, and Google images will suddenly accept your dropped photo. It's just Safari's way of fooling the rest of the world into thinking it's something else. Doesn't always work, but it does often enough.
>formerly User 767: "It seems your login has been deleted. Your login being a little strange, maybe you have written a strange post and we thought your were a bot."
Heaven forbid that an animator might be 'strange'