SHould be easy But Here We Are

please look at the attatchment

here’s the text portion:
the above seem to be the order things are happening

im trying to gey my ship added @ center stage
in “level1” i listen for “level1” to be added then i do the stage deal:

mySampleMC.x = (mySampleMC.stage.stageWidth / 2) - (mySampleMC.width / 2);
mySampleMC.y = (mySampleMC.stage.stageHeight / 2) - (mySampleMC.height / 2);

and i’m getting:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Level1/level1Added()
at flash.display::DisplayObjectContainer/addChild()
at DocumentClass()
leve1added
(this last line is the listener i put in the handler the added event