you only need one stop(); action per timeline.

try removing that script. opening your button symbol. putting that script in the down frame. i dont think you need the "open_btn" part if you do that.

id put my stop action in frame 30 of my action layer. tidy.

test your movie. this should run the timeline once. then whenever you hit the button the movie will return to frame 1 of the movie and play to the stop action. if you dont want it to play at all then put a stop action on frame 1 in your action layer. and set your gotoAndPlay to (1,2) i think. been a while. im rusty.

~Pxl