In reality, these type of issues happen. Water intrusion problems from bad roof flashing or other exterior details are everywhere. Many times, clear visible problems are missed by inspectors. Toadie inspectors who are looking for volume sales miss this crap all the time. Posts like this from the OP are an attempt to find out who to blame it on, when it happens. And it will happen again, 1000 times..... The real question is, what kind of inspector do you want to be? Warranty companies will send out affiliates who's job it is to find a pre existing condition to find them not liable. Thus, "your inspector should have caught that" I bet most home inspectors agreement says their inspection is not a warranty. Yet in their advertisement, some say they offer a warranty. Confusing isn't it?