I'm using RoboHelp 19 Classic. The TOC books were working correctly until 2 days ago. I'm using
I've branched you off because that was a really old discussion. Are you producing WebHelp with your RH2019 Classic version or HTML5 help? Are you patched up with Update 9?
Does the help work correctly if you open it independently of the application?
The the problem has to be with either what has been uploaded to the server / put in the app folders by the developers or the way they are calling the help.