@n49o7 Agreed with above...still not working on our end. I currently have version 3, which is the only available version to install. I event reinstalled it and still the same. I also tried another reverse image extension and they seem to be suffering the same error. Hope that helps in some way.

This stopped working recently, only going to the Google Images front search page. Maybe Google changed something on their end? It's a great and useful extension however.