All of this points to fragility of computer systems. This relies on that. That relies on the other thing. Repeat. I can see how it is frustrating, and I’ve experienced it too many times. After I while — IMHO — the whole things becomes more effort than it it worth, and it is scary because more time goes into maintenance as opposed the actual purpose of the system. “Computers are suppose to be my slaves, not the other way around.” —ELM