Recent update did not change anything in image handling.
Please see here: http://www.nextscripts.com/snap-features/how-snap-sets-images/
here is an example: http://umbrellainteractiveltd.wordpress.com/
The posts with images are using the older version of the plugin: Plugin Version: 3.3.9 (API Version: 2.15.43) and the ones without image are using the Plugin Version: 3.4.2 (API Version: 2.15.43) which doesn’t show images.
So CLEARLY something is broken here… No settings have been changed and again they post to google+: https://plus.google.com/117695188203644881515/posts AND Facebook: https://www.facebook.com/UmbrellaWebStudio with NO issues using the featured image AND those images can be called directly OR via a proxy and even embedded on a totally different site with NO issues…
I have same problem.
installed Plugin:
NextScripts: Social Networks Auto-Poster (ver. 3.4.2)
WordPress SEO by Yoast
W3 Total Cache
when i publish my post on facebook, title and text are correct (by SEO). Image not appeare!
Why?
Try at this link: https://www.facebook.com/pages/Attività-solare-Solar-Activity-/100364603439625
When i press “submit test post to facebook” button, from NextScripts setting panel , the result is ok.