Continue button not appearing

I have three layers that I want visited before the user goes to the next slide.  I added a 'continue' button.    It's not appearing.  This is on slide 1.2.

 

I have something similar on slide 1.4 where the selections branch to other slides and it's working fine.  

 

Also, the 'next' button on the timeline is working without going into any of the layers.

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