I'm trying to update a family member's MacBook Pro that's on 10.8.5 to 10.9, so I first went to software update, clicked it, but the update window never opened. I went to the app store but on the mavericks thing it said "An error has occurred" next to the FREE UPGRADE button. Should I just click it or is something wrong? I am used to 10.6.8. ---------- Nervermind, the Software Update button goes to mavericks on the app store. But it still says the error has occurred.