373.212 Error AppManagerStates.cpp:1590: Мод Kuxynator's Modifications (2.2.7) вызвал неустранимую ошибку.
Пожалуйста, сообщите об этой ошибке автору мода.

Error while running event Kux-Modifications::on_init()
Unknown interface: freeplay
stack traceback:
[C]: in function 'call'
Kux-Modifications/features/fasterStartItems.lua:54: in function 'fnc'
Kux-Modifications/control.lua:10: in function <Kux-Modifications/control.lua:8>

The mod is only for free play mode.
What are you using this mod for?

Scenario: Freeplay

But I installed the mod after the rocket launch

You haven't answered my question yet.

What are you using this mod for?

I can not reproduce the error. I have now simply disabled this line.