Strange closeStack behavior

[Bob Sneidar]

Hi all. 

Very strange. I have a substance belonging to a mainstack that has LOTS of other sub stacks. Only on this ONE substack, when I click the close button (the red dot in the upper left of a MacOS window) it asks me if I want to ave the stack, EVEN THOUGH I have a closeStackRequest in the stack script that saves the stack before passing closeStackRequest. 

If I don't save, or if I do save, the MAINSTACK closes, NOT just the substack! If I cancel nothing happens. 

What the.....???