Mass insert modules into machines with construction bots
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
I don't have the menu in the top left corner anymore. In other saves it works. I have unlocked the first stages of modules yet.
It's unlocked by either researching construction robots or personal roboport equipment.
same here ....
have to disable mod and enable again .. the the menu appears
Are you using any mods that change the tech tree or technologies? In my tests without recipe/tech changing mods it unlocks correctly after researching construction robots. (Factorio 0.18.10 and ModuleInserter 5.0.1)