Yes, this is Ed's code. Why did you comment it? Try to put set step on after declaration and see, what's the problem for this particular exe.

>This is the code that I am using, and all the title captions are different.
>
>*!*		DECLARE INTEGER CreateEvent IN WIN32API ;
>*!*			   INTEGER lpEventAttributes, ;
>*!*			   SHORT bManualReset, ;
>*!*			   SHORT bInitialState, ;
>*!*			   STRING @ lpName
>*!*		DECLARE INTEGER GetLastError IN Win32API
>*!*		DECLARE CloseHandle IN Win32API INTEGER hObject
>*!*		nEh = CreateEvent(0,0,1, PROGRAM(0) + '.EVENT')
>
>*!*		IF GetLastError() = 183 OR nEh = 0
>*!*			*-- This shows that office is currently running in the background.
>*!*			= MESSAGEBOX('This application is currently running!' + CHR(13) + "You can't open it more than once", 16, '')
>*!*			=CloseHandle(nEh)
>*!*			QUIT
>*!*		ENDIF
>*!*	ENDIF