I haven't touched the 170MB re-install of the dreaded -5719 yet, I have no idea what that's going to end up doing. Just when you thought you'd dodged the bullet the first time, Microsoft comes and takes a second swing...
Just tried it again, "We couldn't complete the update, etc". Pretty much what I was expecting at this point. Microsoft should just replace Windows Update with a short script that displays this every time, it'd save having to download 170MB of junk just to get the same result.