I removed the "Application.Quit" in the Auto_Close subroutine.
I coded it as follows:
Application.DisplayAlerts = False
ActiveWorkbook.Saved = True
ActiveWorkbook.Close( 0 )

Now, there are no prompts when exiting the Excel file  and all of Excel is not
shutdown.
I think the above is safer and better than having the Application.Quit
I am not sure how one would use the Application.Quit