I unchecked the 'Disable flare stack item incinerators' option so that I could use incinerators in addition to recyclers in space age, and it does nothing. On game start for new game, the technology to unlock item incinerators simply doesn't exist. Disabling the Cerys mod then starting a new game allows the research to show up as normal, and adding the Cerys mod after game start doesn't remove the technology. I tried creating new games with both the box checked and unchecked and both times item incinerators were removed from the game (the technology, I can still cheat them in through the editor). Removing the Cerys mod after starting the game does not make the technology appear.
This was tested with ONLY Cerys and its dependent mods enabled (in addition to space age, quality, and elevated rails) and I still couldn't get the technology to appear no matter what I chose for this option.
Can you please fix this setting to work as intended? Thanks!