EZTarget

Error while running the chunk
  [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]:0: attempt to call global 'GetUnitClassIcon' (a nil value)
  func: GetUnitClassIcon, global, line: -1, defined: C, line: -1, [C]
    func: SetupSingleView, global, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
      func: updateCallback, field, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
        func: ?, ?, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/UnitState.luac"]
          func: ?, ?, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Libs/EventDispatche..."]

  
  func: __index, metamethod, line: -1, defined: C, line: -1, [C]
    func: SetupSingleView, global, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
      func: HandleUnitSpawn, global, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
        func: InitialUnitListUpdate, global, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
          func: SetMode, global, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
            func: callback, field, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Scripts/mainscript...."]
              func: SetState, field, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Libs/MultiStateButt..."]
                func: ?, ?, line: 0, defined: Lua, line: 0, [string "Mods/Addons/EZTarget_v1.2/Libs/MultiStateButt..."]