     The instance of sketch
   ###
   @open: (dirFs) ->
-    dirFs.readFile(SKETCH_CONFIG, SKETCH_ENCODING).then((data) =>
+    return dirFs.readFile(SKETCH_CONFIG, SKETCH_ENCODING).then((data) =>
       obj = @_migrateAtOpen(JSON.parse(data))
       return Sketch.parseJSON(obj)
     ).then((sketch) =>

  @event("additem")

  ###*
  @event addItem
    SketchItem added
  @param {Object} event
    Event object
  @param {Sketch} event.target

  @event("boardchange")

  ###*
  @event additem
    SketchItem added
  @param {Object} event
    Event object
