• Looks like the end tags for all these meta tags are missing if our theme doctype is XHTML 1.0 Transitional. Using latest WP and Plugin.

    Validation Error:
    End tag for X omitted, but OMITTAG NO was specified
    You may have neglected to close an element, or perhaps you meant to “self-close” an element, that is, ending it with “/>” instead of “>”.

    Line 16, column 45: end tag for “meta” omitted, but OMITTAG NO was specified
    <meta name=”twitter:card” content=”summary”>
    Line 17, column 44: end tag for “meta” omitted, but OMITTAG NO was specified
    <meta name=”twitter:site” content=”@…”>
    Line 18, column 102: end tag for “meta” omitted, but OMITTAG NO was specified
    …age’ content=’…logo.png’>
    Line 19, column 201: end tag for “meta” omitted, but OMITTAG NO was specified
    ….”>

    Is there a reason these are left off? If not, I have an update for you. It’s as easy as adding in a handful of ‘/’ to close all the meta tags, but if you want the updated file let me know where to send it.

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

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