State change won't stick and button actually disappears!

Help! I am trying to do two things in my SL2 course:

1) stop the audio from playing anytime the slide is revisited. Can't get that to happen even though I've used a 'stop media" trigger.

and 

2) Change the state of some progress buttons at the bottom of the same slide to go from colored to gray. I've created a gray state for each and setup a trigger for the state to change if the user clicks the button. But the state change seems to be "disappeared" instead of "gray! Can't seem to figure out the problem. Attached is my course. Thanks.

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