alainwoll on "[Plugin: WordPress SEO by Yoast] Homepage unrecognized by sitemap"

Hello,
I use your plugin on other sites and now I have a problem with the sitemap does not recognize the homepage. A priori, other plugins are not involved. I tried "google xml sitemap" and homepage has been recognized immediately. This is a dynamic page.
Can you give me directions to correct the problem.
Thank you for your reply.

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