ToME: the Tales of Maj'Eyal

Orc alchemist, transfer rune to Drolem, switch to Drolem, press 'i' to call up the inventory to use the rune.

Once you save and reload the game it works fine.

--using 'i'--

Lua Error: /engine/ui/Inventory.lua:79: attempt to index a nil value
At [C]:-1 __newindex
At /engine/ui/Inventory.lua:79 generate
At /engine/ui/Base.lua:105 init
At /engine/ui/Inventory.lua:57 init
At /engine/class.lua:147 new
At /mod/dialogs/ShowEquipInven.lua:90 init
At /engine/class.lua:147 new
At /engine/interface/ActorInventory.lua:353 showEquipInven
At /mod/class/Game.lua:1880
At /engine/KeyBind.lua:236

--using mouse--

Lua Error: /engine/ui/Inventory.lua:79: attempt to index a nil value
At [C]:-1 __newindex
At /engine/ui/Inventory.lua:79 generate
At /engine/ui/Base.lua:105 init
At /engine/ui/Inventory.lua:57 init
At /engine/class.lua:147 new
At /mod/dialogs/ShowEquipInven.lua:90 init
At /engine/class.lua:147 new
At /engine/interface/ActorInventory.lua:353 showEquipInven
At /mod/class/Game.lua:1880
At /engine/KeyBind.lua:264 triggerVirtual
At /mod/dialogs/MapMenu.lua:80 use
At /mod/dialogs/MapMenu.lua:39 fct
At /engine/ui/List.lua:155 onUse
At /engine/ui/List.lua:81 fct
At /engine/Mouse.lua:58 receiveMouse
At /engine/Mouse.lua:98 delegate
At /engine/ui/Dialog.lua:657 mouseEvent
At /mod/dialogs/MapMenu.lua:53 fct
At /engine/Mouse.lua:58

--using 'i' again

Lua Error: /engine/ui/Inventory.lua:79: attempt to index a nil value
At [C]:-1 __newindex
At /engine/ui/Inventory.lua:79 generate
At /engine/ui/Base.lua:105 init
At /engine/ui/Inventory.lua:57 init
At /engine/class.lua:147 new
At /mod/dialogs/ShowEquipInven.lua:90 init
At /engine/class.lua:147 new
At /engine/interface/ActorInventory.lua:353 showEquipInven
At /mod/class/Game.lua:1880
At /engine/KeyBind.lua:236

It's back in 1.4.8.