Why wont my button work? I want it to link back to the first frame in the first scene of my movie.

Question

This is the code I have
on (release) {
gotoAndPlay (1,"intro");
Where "intro" is my scene. and 1 is the frame.
It works fine without the "intro"

Answer 1

In AS1/2 (unlike AS3) the arguments are ordered as (scene, frame), but if you specify only 1 it is treated as a frame identifier.  So you would be correct using gotoAndPlay("intro", 1);
You should get that code off of the button and place it in the timeline - placing code on objects is a bad practice.  To do this, assign the button an instance (like maybe "btn") and code it in the timeline as follows...
btn.onRelease = function(){
    gotoAndPlay("intro", 1);
Lastly, the use of scenes is better off avoided.  I never used them in my own work and have only encountered them in inherited designs.  While they might work well with uncoded animation work, when you start mixing navigation coding with them things can become unpredictable and they can fail seemingly without cause.  You are better off just using the one scene and dividing it into sections and/or having your sections as movieclips.