This has not been a problem before but, McAfee LiveSafe is unable to update right now and whenever I click "start" under update, it just says that it has failed without listing any details.
I have found this in my console: Fmp:Error occured while starting updating from McAfee LiveSafe.
Unfortunately neither of us Moderators run the Mac Operating system. Hopefully someone with more knowledge/expertize will pick up this thread and add to the discussion. During the interim , you can try running the Latest McAfee Virtual Technician.
http://mvt.mcafee.com You can also contact Technical Support utilizing the same Link. Via Online Chat/Phone being the most expedient.
All the Very Best,