[Plugin: WordPress SEO by Yoast] There are 1 words contained in the body copy.

WordPress version: 3.4.2
WordPress SEO version: 1.2.5

I did this: while editing a post, which on previous saves was all green on SEO, I added an additional image using the wordpress add media.

I expected the plugin to do this: recognize the current word count with the new image

Instead it did this: reported the word count to now be 1.
Post: http://caddyinfo.com/wordpress/virtual-dyno-building-a-sample-set/ has more than 1 word, so not sure what caused the confusion. I don’t see any oddity in the html for the image with caption.

http://wordpress.org/extend/plugins/wordpress-seo/