Trouble installing Android 4.2 APIs
<p>I updated ADT through Eclipse today to version 21. Now when I open the SDK Manager I would expect there to be a folder like "Android 4.2 (API 17)", which would contain the SDK Platform and APIs, documentation, etc. However, instead I just get a folder called "API 17", and the only thing in it is "Google APIs", which I can't even install because </p>

<blockquote>
  <p>Installing this package also requires installing:
  - Missing SDK Platform Android, API 17</p>
</blockquote>

<p>What do I do here? Thanks</p>
