has something to do with "spawnable"

1.1.5 works

NVM 1.1.5 loads up but cannot start a game (world)

First argument must be a number, table or string. Got: nil
stack traceback:
Kux-OrbitalIonCannon/control.lua:576: in main chunk
stack traceback:
[C]: in function 'on_event'
Kux-OrbitalIonCannon/control.lua:576: in main chunk

debug old versions is cumbersome and costs more time.
please use the latest version and post the whole error message.
it would also be helpful if you would write which actions lead to the error.

Using 1.1.6 when starting up the game on 1.0 (running the game for the first time, not world) says :

"Failed to load mods: Error while loading item prototype "ion-cannon-targeter" (item): Unknown flag "spawnable"
Modifications: Orbital Ion Cannon (SE Edition)

Mods to be disabled: Kux-OrbitalIonCannon (1.1.6)"

Cannot play the game, let alone go to main menu, without disabling it

Happens even with only Space exploration (and its dependencies) installed. Latest version 2.1.6 works fine ON 1.1
2.1.6 doesnt work with 1.0, even if it does, it seems like mods set for 1.1 wont load on 1.0, whereas 0.18mods worked on 1.0

should be fixed now. I wrote the mod for 1.1 only. now it should work also with 1.0