I inserted the following script
"<noscript>
<!--Javascript is not enabled-->
</noscript>".
I used the menu options Insert>HTML> Advanced> Script. Unfortunately, RoboHelp places this tag inside the "<script>" "</script>" tags which causes errors. I was in the procces of moving the tags when RoboHelp froze. RoboHelp (HTML) v11.0.1.235 was installed on my system last week. There is an Add-on to Microsoft Visual Studio (v4.5.50938) where all the files are kept in Source Control. The contents of the problem details are below: