With the two last update (3.0.4 & 3.0.5), I have an error when I want to open a smart linked chest of your mod "Kuxynator's Smart Linked Chests (3.3.4)" :

Error while running event Kux-SmartLinkedChests:on_gui_opened (ID 98)
Kux-GuiLib/Iib/ElementBuilder.lua:121: container must not be nil
stack traceback:
[C]: in function ‘error'
Kux-GuiLib/lib/ElementBuilder.lua:121: in function ‘createView'
Kux-SmartLinkedChests/runtime/ChestGui-view.lua:21: in function ‘create'
Kux-SmartLinkedChests/runtime/ChestGui.lua:257: in function 'on_gui_opened'
Kux-SmartLinkedChests/runtime/ChestGui.lua:528: in function ‘fnc'
Kux-CoreLib/lib/EventDistributor.Iua:167: in function
<Kux-CoreLib/lib/EventDistributor.Iua:160>

damn, a missed a mod during the update ;-)
thanks for reporting

No problem, I have seeing that with the "Kuxynator's Production Rates", because that use the 3.0.4 version of the gui lib, so I have to unuse the prod mod and retrograde gui lib.