Hi, I don't know if this has been solved but I fixed the templates. It was an easy fix so I hope it helps those people interested in validating their pages.
Go to: components -> com_chronocomments and replace the template folder with the one in this attachement. Your pages should validate now if everything is good with the rest of your site.
Go to: components -> com_chronocomments and replace the template folder with the one in this attachement. Your pages should validate now if everything is good with the rest of your site.
Cheers