Specs are in my signature. Issue: I wanted to change the look of the icons on my Macbook and was using Candybar (previously purchased when I had my Late 2009 MB). Anyway, I noticed it wasn't taking my changes (apply button was nowhere to be found). Did a Google Search for the following term "candybar mavericks" and found this: http://idevicedailys.com/os-x/howto-use-candybar-os-x-mavericks/ In the instructions it stated to change 2 values in Terminal. The problem is I can't get back into Terminal or many other apps. Spotlight doesn't work. It's telling me the application can't be opened because I'm using an older version of the OS. I also can't get into System Preferences, About My Mac, nothing. Any work around to reset this thing in boot? Worst case I'll make a Genius Bar appointment.