I seem to keep getting a popup every few hours regarding '''XULRunner''' complaining about '''''"This profile was last used with a newer version of this application. Please create a new profile."''''' This will occur every so often, even when Firefox is not open. I have already attempted to: * Reboot * Clear cache * Uninstall extensions * Uninstall/reinstall Firefox * Downgrade Firefox * Make a new profile and switch to it * Delete all previous existing profiles I think I've run out of things to do, anyone got a silver bullet for this thing? I was unable to find anything conclusive with Google, so I figured I'd ask here.