OS X 10.6.8 App Store "Get" Button Does Nothing I am trying update to El Capitan using the App Store. I am logged in and my Mac meets the requirements, but when I click "Get" nothing happens. Just goes dark blue and nothing else after that.

What can I do? I've tried with other user accounts, tried re-installing OS X from the disk, but I still have the issue.
@rogerdpack answered this in a comment at Mac OS X 10.6.8 App Store not working:

To get around this problem, manually go to "software update", install all available updates, reboot, and then the app store GET button should work again.

If this still fails, try to reboot again, and/or to log in to the App Store before clicking the GET button.