I am using Firefox 39.0.3 on Windows 8. The problem I am having is that the new xkit WILL NOT work. I have uninstalled all of my other addons (Adblocker). I have restarted Firefox. I've even restarted my computer. I've tried re-downloading the addon countless times from the one you have linked on your blog. It will say on my addons page in Firefox that I have the "New Xkit" installed but when I go to my dashboard the xkit symbol is not there! Please help!