A Big Problem,that No One Can Fix, Or Can You?

Basically,

I am having some troubles with the UI components in flashMX2004 V7.2
Attached is an example .fla that shows these problems.

In the first scene, there are 2 buttons both with the same actionscript, one is a rectangle drawn then converted to button, the other is a UI component Button, both contain the following code,

on(release)
{gotoAndPlay(2);}

However the UI component button doesnt even do anything,

Similarly with the second scene, the combo box will not work , the code i have is the following, which is on the combo box.

on(change)
{
comboboxvalue = this.getValue();
trace(comboboxvalue);
gotoAndPlay(comboboxvalue);
}

I used trace to see if it would work when putting the combobox value in a variable. But will not work when put in gotoAndPlay, I also tried putting as a test, still nothing........,

on(change)
{
comboboxvalue = this.getValue();
trace(comboboxvalue);
gotoAndPlay(2);
}

PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE