A new version of XKit for Firefox (7.1.3) that fixes Editor not opening and a few other bugs. You can update by simply re-installing XKit from the download page.

I’ve also added Framework Version Checking, which alerts you when there is a new version of XKit available. On Chrome, XKit updates itself automatically, but on Firefox and Safari, it can only update its extensions, and not itself, so it should be helpful for Firefox and Safari users.