I'm using the Auto Ghost Builder mod (https://mods.factorio.com/mod/AutoGhostBuilder) to help fill in ghosts when I don't have construction robots yet. When I use the mod to place a Cybersyn combinator, then click on it to open its UI, I get a non-recoverable error:

Error while running event cybersyn::on_gui_opened (ID 95)
cybersyn/scripts/main.lua:445: attempt to index local 'old_params' (a nil value)
stack traceback:
cybersyn/scripts/main.lua:445: in function 'combinator_update'
cybersyn/scripts/gui.lua:250: in function 'gui_opened'
cybersyn/scripts/gui.lua:216: in function <cybersyn/scripts/gui.lua:210>

Any other method of placing the combinator works fine, but if it was placed with Auto Ghost Builder then it will crash every time.