HI.
I just like to report the following.
When an application hides the X button. It cannot be closed by AI through a Close Application Custom action.
The application has the control box Close Button set to invisibile. The Windows doesn't have the X closing button top righit.
This is necessary because the application can't be closed by the user. The application closes it self in response to other events.
It seems that AI is incapable to close this type of window.
Simply try to create a Windows Form with invisible control box.
Ciao
Ricardo