Dynamic content in scrollPane - need help

Here’s the issue. I’m tryign scroll dynamic buttons (movie clip with on release actions) in a scrollPane component. As soon as i drop the scrollPane onto the stage, all the buttons become white rectangles with nothing in it

the buttons should be grey and when you click on them they 'll say “CLICK” on the output window. but that doesnt work either.

here’s the source code
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var buttons:MovieClip;
scrollPane.contentPath = “scrollMovieClip”; //empty movie clip

for(i=0; i<51; i++)
{
scrollPane.content.attachMovie(“button”,“button”+i,scrollPane.content.getNextHighestDepth());
scrollPane.content[“button”+i]._y = (i+1) *20;
scrollPane.invalidate();

}

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apreciate any help. thnx alot