UI Lua Error when playing on an older version

[PcTriumph]

I'm trying to finish a 1.3.3 run but one of my old addons is returning an error trying to play on an old version. I'd like to finish my old run, however.





Lua Error: /mod/class/uiset/Minimalist.lua:144: attempt to index global 'marson' (a nil value)
At [C]:-1 __index
At /mod/class/uiset/Minimalist.lua:144
At [C]:-1 require
At /mod/class/Game.lua:379 loaded
At /engine/GameEnergyBased.lua:39 init
At /engine/GameTurnBased.lua:39 init
At /mod/class/Game.lua:76 init
At /mod/addons/ashes-urhrok/superload/mod/class/Game.lua:28 init
At /engine/class.lua:147 new
At /engine/Module.lua:1001 instanciate
At /engine/utils.lua:2221 showMainMenu
At /engine/init.lua:165
At [C]:-1 dofile
At /loader/init.lua:217

[Zireael]

Looks like you have Marson's UI addon, it doesn't work with 1.4.0 yet.