I just upgraded (on a trial basis) from RH15 to RH19.
I updated an existing, fairly small project from the start screen. The dialog told me all went well. I then generated WebHelp output and viewed the output. The TOC shows nicely, but all of the pages show nothing more than a header.
Message was edited by Peter Grainge to show full version name. It helps others when they are searching.
I tried that and the result is the same. If I launch Welcome.htm from a browser I see the page contents and can generally navigate my document, but it doesn't look "nice", so to speak. There are no TOC, index, etc. It's a fairly vanilla display.
I will go watch some tutorials on your site and keep working at it. I like what I see in RH2019 so I'm excited to learn more.
Ah, yes. My mistake.
In the editor I am able to edit my pages as expected. When I click on the 'preview' button all I see is the header and the footer from the master page. The header is at the top of the preview page and the footer is immediately below it. I can examine the html by clicking on the 'source' button and I see everything I would expect.
As an experiment, I removed the <meta> tag that points to my master page. When that tag is removed I can review the page (without the header and footer, of course). So, there seems to be an issue with my master page.
I fixed the problem by creating a new master page. I deleted the old version, renamed the new version to match the name of the old version, and voila, everything displays as expected.