I really have no idea where this came from or what it's referring to.
In the enduser's control panel (not the admin control panel) if you click All Installation - a user some how got a WordPress installation under a heading called "Disabled Scripts Installations". I have no idea how the user got it there. I have no idea how to make it active again.
Can't find any documentation of this. All documentation seems to lead back to enable or disabling a script in the admin control panel - and that is not what I'm referring to here.