Unable to accept new App store terms and conditions

Question

Hello, i just bought a Macbook Air 13" with OS X Yosemite, and I am trying to buy an app from the App store. However, it's asking me to accept the new terms and conditions, but when I click on "accept", nothing else happens, and I am not able to confirm. So every time I try to buy an app it keeps asking the same question. I have tried to disconnect and reconnect my App store account, as well as restarting my Mac, but nothing changes.

Answer 1

1. Make sure you scroll all the way to the end of the agreement before trying to click Accept.
2. Back up all data before proceeding.
Triple-click anywhere in the line below on this page to select it:
~/Library/Cookies/com.apple.appstore.cookies
Right-click or control-click the line and select
          Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item selected. Quit the application if it's running. Move the selected item to the Trash. Relaunch the application and test.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination  command-C. In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
3. The warranty entitles you to complimentary phone support for the first 90 days of ownership.