I’m aware that there is an incompatibility between Safari 7.0.1 and XKit, but I’m afraid I can’t provide any official new release to fix it today.

Update: As I’ve received more than a few messages about the “temporary” update fixing the problem both on 7.0.1 and older versions of Safari, it’s now available as an official download on the XKit website.

If you are having problem with XKit disappearing on Safari, please just re-download XKit from xkit.info/download and restart your browser. Your settings will be preserved.