Standalone crashes on exit

[Roger.E.Eller at sealedair.com]

I have just built my first app using Rev 2.0.1 (as returned by 
revAppVersion). My stack contains 2 small sub-stacks that are used for 
input/error dialogs. Each of them has an OK button that contains "close 
this stack". If I launch my standalone and immediately quit it, the exit 
is peaceful. However if any of the sub-stacks have been opened and closed, 
when I exit the main stack via "close this stack" it has a system level 
error. On Win2000 the error is "The instruction at 0x004a93cd referenced 
memory at 0x00002f04. The memory could not be read." On Mac OS X, the 
error is "The application has unexpectedly quit." Any ideas of how to 
prevent this behavior?

Kind Regards,
Roger Eller
roger.e.eller at sealedair.com