Hello,
the game crashed when I open the GUI from the excavators from the mod Bucket Wheel Excavators after I placed it on uranium ore:

Error while running event ActualCraftTime::on_gui_opened (ID 83)
ActualCraftTime/control.lua:228: attempt to perform arithmetic on local 'IPS' (a nil value)
stack traceback:
ActualCraftTime/control.lua:228: in function 'addItemFrame'
ActualCraftTime/control.lua:471: in function <ActualCraftTime/control.lua:292>

Also happening with "Texugo TA Miners" (https://mods.factorio.com/mod/Texugo_TA-miners).

The quick hack to at least prevent a crash is to add:

    if product.name == "sulfuric-acid" then
        return
    end

at the beginning of local function addItemFrame in control.lua.

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