If you forget to put anything in the main title field and press ok, you get a warning dialogue box asking to enter a title - pressing okay, saves the song but without letting you add a main title a title. A blank line appears in Available songs window.
But you cannot edit or delete that blank line.
It can be double clicked so it appears in the service list window. But when that is clicked, it isn't displayed.
When the otherwise brilliant Zionworks is exited and reopened, the incorrect song appears to be deleted.
Keep up the great work