ToME: the Tales of Maj'Eyal

using gives rise to this message-

stack traceback:
/data/general/objects/egos/wands.lua:64: in function 'use'
/engine/interface/ObjectActivable.lua:66: in function </engine/interface/ObjectActivable.lua:63>
(tail call): ?
/mod/class/Player.lua:643: in function </mod/class/Player.lua:641>
Lua Error: /mod/class/Player.lua:679: /data/general/objects/egos/wands.lua:64: attempt to index field 'engine' (a nil value)
At [C]:-1
At [C]:-1 error
At /mod/class/Player.lua:679 action
At /engine/dialogs/ShowEquipInven.lua:147 use
At /engine/dialogs/ShowEquipInven.lua:46 fct
At /engine/ui/ListColumns.lua:243 onUse
At /engine/ui/ListColumns.lua:191 ?
At /engine/KeyBind.lua:198 receiveKey
At /engine/ui/Dialog.lua:320 keyEvent
At /engine/ui/Dialog.lua:170

fixed