hola,
no veo el error del validador:
Using windows-1252 instead of the declared encoding iso-8859-1.
Line 66, Column 10: The text content of element script was not in the required format: Expected space, tab, newline, or slash but found < instead. </script>
Código HTML:
Ver original<script type="text/javascript" src="https://apis.google.com/js/plusone.js"> <!--
{
lang: 'es';
}
//-->
Syntax of script documentation:Zero or more code comments, each of which is either a single-line comment starting with "//" or a multi-line comment starting with "/*" and ending with "*/". The content must also meet the constraints of the script microsyntax. For further details, see Inline documentation for external scripts.
un saludo,
josé carlos.