RH11 Webhelp Output TOC won't render, have adjusted LNG file, project settings for Webhelp, unblocked popups, why does this most basic of all features not work, pls help.

RH11 Webhelp Output - TOC won't render, have adjusted LNG file, have adjusted project settings for Webhelp, have

unblocked popups, why does this most basic of all features not work, pls help.