did try to build one on my ship while moving between planets.

got this error:
The mod Orbital Ion Cannon (Space Edition) (3.7.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Kux-OrbitalIonCannon::on_space_platform_built_entity (ID 73)
Kux-OrbitalIonCannon/control.lua:286: attempt to index local 'surface' (a nil value)
stack traceback:
Kux-OrbitalIonCannon/control.lua:286: in function 'addIonCannon'
Kux-OrbitalIonCannon/control.lua:375: in function 'install_ion_cannon'
Kux-OrbitalIonCannon/control.lua:518: in function 'fnc'
Kux-CoreLib/lib/EventDistributor.lua:187: in function 'fnc'
Kux-CoreLib/lib/EventDistributor.lua:156: in function <Kux-CoreLib/lib/EventDistributor.lua:150>

Due to extensive code changes, I can no longer use the reported stacktrace directly to localize the error.
Please test with the next version if the error still exists