Can't access Parental Controls
My dad and I are trying to change the Parental Controls that he has set on my computer, but everytime System Preferences quits. It comes up with the message saying that "the application System Preferences quit unexpectedly" and I've reported the problem to Apple but it keeps quitting whenever I try to access it. Everything else is fine.
I've only had my notebook (MacBook Pro) for just over a year and I've never had any problems before this.
MacBook Pro (13-inch Mid 2012), OS X 10.8.4