Thanks for the mod.
I got this while manually typing the quantity of fuel cells requested:
Error while running event logistic-reactors-2::on_gui_text_changed (ID 2)
logistic-reactors-2/control.lua:120: attempt to index field 'lr fuel row' (a nil value)
stack traceback:
logistic-reactors-2/control.lua:120: in function <logistic-reactors-2/control.lua:113>
