Master_Shake and kdub: not here to start any arguments. Calm down.
It's not job threatening because I own my own CAD business and I only employ 4 people. I'm trying to have a little fun. The lisp I'm writing will only cause an alert and then save and close the drawings.
Furthermore, most users save their drawings frequently because AutoCAD fatal errors at least once a day anyway. So even if I did execute my original idea of causing a fatal error, the world would continue to spin. Keith gets it; these things are hilarious