I upgraded from RH2019 (Re-imagined) to RH 2020.0.156 and I can no longer generate my HTML5 output. Selecting Generate in any of my output presets causes the RH screen to go completely white and hang. From that state, while I can still see the menus, selecting Help | Restart RoboHelp does nothing. Ditto for clicking the X icon. I have to close it through the Taskbar or Task Manager.
Well, I don't know whether it was removing the space between 1 and RoboHelp that did it or me fixing some broken links I didn't know I had, but everything is generating just fine now. Fingers crossed it stays that way.
My money is on broken links but with those fixed it's easy to prove it by putting some spaces back in.
Were you generating to a folder with spaces? That shouldn't matter either but worth testing.
Nope. Nowhere in those folder names were there spaces.