Instead of just removing the child by referencing its parent to remove itself (I had to test to make sure this actually worked). Create a function in same place that you create/instantiate the Catcher that removes first the eventListener ENTER_FRAME, then removes the Catcher.
Basically, you are most likely losing control flow of your catcher, that is, it seemingly tries to remove itself from the stage twice. After it removes itself first time, its parent becomes null, hence the 1009. And, seeing as you've hit a 2028, the same reason applies, your catcher is no longer a child of anywhere.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.