I have installed "WordPress SEO Yoast" plugin version 1.4.15.
I want to use also the plugin "Related Items", but when I install it and then activated, I am not able to set SEO stuffs like "Meta Description", "Seo Title" or "Focus Keyword" per POST or/and per PAGE.
For example, I choose one post, then edit it, then in the SEO section
I fill some content for "Meta Description", and when I click on the button "Update", the "Meta Description" is not saved.
If I deactivate the "Related Items" plugin, the SEO again starts working correctly!