Hi!
I created a SDI app and I want to show a dialog after creating SDI,  therefore I defined an user define message

#define WMU_STARTUP (WM_APP+10)

and call it from CSDIView::OnInitUpdate() with PostMessage(WM_STARTUP).
In debug version it work correctly but in release version it generates an Application Error after close the program.
what's the problem?
Thankx