Smush Pro and NextGen integration

After running WP Smush on my website I had to upgrade to WP Smush Pro becasue it was not seeing NextGen gallery images. The first effort only smushed 79 of 80 images when the website actually has well over 400 images. Now that I have activated the Pro plugin and have the NextGen integration box checked I do not see that the plugin recognizes the NextGen images. Any help would be appreciated.