A few times a day, when i try to save, I get this message "The family is connected in a duct/pipe network and can no longer keep the connectivity. Disconnect the family from the network?" and my only option if i want to save is to disconnect the duct or pipe from the fitting. Then I can go back after i save and reconnect them, and save again and everything is fine. It seems random, it will happen on a duct I havent touched in over a week, and sometimes it happens on multiple connections at the same time, so I have had to disconnect up to ten different fittings at a time and reconnect them again, a huge waste of time since there was nothing wrong with them the way they were if it lets me save the next time I try. Anybody out there experiencing this?