ToME: the Tales of Maj'Eyal

Probably the same weird b15 bug. I tried in vain to use the orb (but it worked previously).

stdout:

• stack traceback:
  /engine/interface/ObjectActivable.lua:66: in function </engine/interface/ObjectActivable.lua:63>
  (tail call): ?
  /mod/class/Player.lua:672: in function </mod/class/Player.lua:670>
  Lua Error: /mod/class/Player.lua:708: /engine/interface/ObjectActivable.lua:66: attempt to call field 'use' (a nil value)
  At [C]:-1
  At [C]:-1 error
  At /mod/class/Player.lua:708 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/ListColumn