FYI
I downloaded El Capitan and then ran MacKeeper and it came up “Serious” junk and could not “fix” it.
I then contacted MacKeeper and they said wait one week till they get can fix their software.
why doe anyone run mackeeper? I mean other than falling for an advertisement?
If OS X says MacKeeper is serious unfixable junk, then... maybe it is?
The publishers of MacKeeper were just required by a class action lawsuit to pay millions of dollars to customers who they persuaded to install their malware on their computers. It is not what it purports to be. It is indeed malware and not anything your Mac does not already do itself and in fact turns off many of the system housekeeping utilities that UNIX uses to keep your Mac safe and clean in operation. They do not understand how UNIX runs and are a scam operation, using scareware to sell their malware to unsuspecting Mac users who were once Windows users, used to having to run multiple such third-party utilities to keep their Windows machines operational.
Get it off your Mac and keep it off. . .