          extractor: :class:`Aligner`
              The extraction pipeline for the Manual Tool
          loader: :class:`FramesLoader`
              The frames loader for the Manual Tool
          video_meta_data: dict
              The video meta data that exists within the alignments file
  
          Notes
          -----
          Because some of the initialize checks perform extra work once their threads are complete,
          they should only return ``True`` once, and should not be queried again.
 
</s> remove     def _wait_for_threads(self, extractor, loader, video_meta_data):
 </s> add     def _wait_for_threads(self, extractor, loader, valid_meta): </s> remove         if any(val is None for val in video_meta_data.values()):
 </s> add         if not valid_meta: </s> remove         getattr(self, "_update_tk_{}".format(self._current_view_mode))()
 </s> add 
        valid_meta: bool
            Whether the input video had valid meta-data on import, or if it had to be created.
            ``True`` if valid meta data existed previously, ``False`` if it needed to be created
          extractor: :class:`Aligner`
              The extraction pipeline for the Manual Tool
          loader: :class:`FramesLoader`
              The frames loader for the Manual Tool
        valid_meta: bool
            Whether the input video had valid meta-data on import, or if it had to be created.
            ``True`` if valid meta data existed previously, ``False`` if it needed to be created
        valid_meta: bool
            Whether the input video had valid meta-data on import, or if it had to be created.
            ``True`` if valid meta data existed previously, ``False`` if it needed to be created
  
          Notes
          -----
          Because some of the initialize checks perform extra work once their threads are complete,
          they should only return ``True`` once, and should not be queried again.
keep keep keep keep replace replace keep keep keep keep keep
 Bug fix - Manual Tool - Fix a first time indexing bug when EEN > 1 
tools/manual/manual.py