"The link you followed has expired. Please try again." error
You are seeing this error because the theme is too big to be uploaded to your site. This is because your web host has set one of the following too low:
- PHP Memory Limit (should be 256MB or higher)
- Post Maximum Size (should be 64MB or higher)
- WordPress Upload Limit (should be 64MB or higher)
Follow the links for how to increase each of these values.
Alternatively you can upload the theme through an FTP client or file manager in your cPanel. To set up an FTP client refer to the WordPress documentation on this http://codex.wordpress.org/FTP_Clients.
Once you have set up your FTP client upload the aardvark theme folder to /wp-content/themes/ directory on your server.