Factorio Forums

I'm on the fourth level of the campaign and after I research rocket travel nothing happens. There is no pop-up nor does the object change. The technology itself has no outputs only requirements to research.

Is this a bug or am I just stuck? What do I do?

I've attached the save

Hello, I checked the savegame, and there is missing file control.lua in the save directory.
Are you sure you didn't remove it?
(Without the control.lua there is no script/logic in the game so it also doesn't react to the technology being researched)