Slides and buttons with triggers

I have a Storyline with one slide and 12 layers.  I have buttons (with triggers) at the bottom of the slide for navigation to the layers.  Those buttons show up in each layer...and work most of the time.  However, as I navigate through the layers via the buttons some will work and some won't.. I have played with this way too long!  Does anyone have any suggestions? 

2 Replies