Error #1034: Type Coercion failed on a MouseEvent

programming flash
1

Hey,
On as3 mouse click event, I have the following code:

overlay_mc.screen.removeChild(overlay_mc.screen.getChildAt(0));

Its removing the chilt at 0 but along with it, it shows me the following error message:
TypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@29750269 to flash.events.MouseEvent.

Any guess what I am doing wrong here?

Thanks.