New pages in Robo Help 8 will not display when published

WRT the Mark Of The Web (MOTW) - It may no longer be relevant. Your question as to whether it should be on or off seems to imply that you really don't know what purpose it serves.

For starters, it is (or possibly WAS) specific to Microsoft Internet Explorer browser. When you generate with it enabled, it adds a specific line of code to all the HTML pages produced during the generation process. You know how when you open Microsoft Internet Explorer and view the WebHelp from your local hard drive and you see that Yellow Information Bar and you get a message about Scripting and all that? That's what MOTW is (or WAS) intended to prevent. And this only happens when you view content from a local drive. (Files on a LAN server still count as a local drive in this case)

Once your content is served from a web server (where the address begins with HTTP://) MOTW is about as pointless and helpful as an old tape deck with fried electronics. It has no effect whatsoever on the content and the added lines are completely ignored.

My reason for being careful to be a bit evasive on whether it's still relevant is that the most recent versions of Microsoft Internet Explorer have made many changes. It's quite possible that MOTW is now irrelevant. I believe that's why Jeff was also suggesting you test using Mozilla Firefox. That would confirm the content is there and it's just IE having the issues.

Cheers... Rick