I also tried doing it just advancing frames instead of scenes and it stays stuck on frame 2 and wont advance on other computers but works perfectly on mine.
Here is my code for scene two:
IBP2.restrict = "0-9"
input8 = IBP2.text;
MovieClip(this.root).gotoAndPlay(1, "Scene 3");
put a trace() on frame 1 of "Scene 3" to confirm you're going to that frame.
then, once that's confirmed, publish a swf and html and upload both. do not edit the html. post the url to the html and indicate the problematic button.
Ok apparently its either because I am using a trial version or because its CS5.
I created the same thing using a registered version of CS4 and it works on all machines.
If anyone can figure out which is the case please let me know.