We've decided to update XKit. It's harder than it looks. We're not in contact with the original XKit Guy, nor do we have access to xkit.info. We currently operate at this blog and on GitHub.
Fyi, archived post settings do not carry over. At least they didn't for me. Not a huge deal, but thought you should know.
I’m not sure if this is a Firefox/Chrome thing or just a total crapshoot, but it seems to work for some people and not others. Sorry about your settings!