Own frame: 1
Constructing frame, self.numChildren: 0

Own frame: 2
Entering frame, self.numChildren: 0

Own frame: 2
Constructing frame, self.numChildren: 0

Own frame: 3
Entering frame, self.numChildren: 0

Own frame: 3
Constructing frame, self.numChildren: 0

Own frame: 4
Entering frame, self.numChildren: 1
    null
Stopping all MCs
