Collision with avatars and scene not working

[JvdBosch]

Update:

I encountered something strange: I cannot extract a list of children from my .ive file, although I can acces the children by name.

So:

ObjectsinMall = mall.getChildren() is an empty list,
but
tub = mall.getChild('Layer:Bak") is a valid object
And when I open the Properties of the stage, or .ive object, I see all the children.... Strange....

Does an .ive file not support this? Or is there something else I am overlooking?