Moving this discussion to the Photoshop General Discussion forum.
Bridge has a configurable option that sets it to start when you first log into your system. All that's there for is so that it will come up a little sooner than if you started it cold when you really need it. Yet Adobe's installer can't deal with Bridge being running when the updater is trying to do its thing.
Put your forefingers on your temples, close your eyes, and try to imagine, knowing that Photoshop runs on both Macs and PCs, what the next question you'll be asked is.