android - Unable to create a new project in Eclipse after update to SDK Rev. 20

After updating the android SDK, if you are unable to create a "Android application project", or "New Android Activity", wherein everytime you try to create the following below popup comes in

Solution:-
     Open the SDK manager, delete the Android support package. Choose the current project, try install from the above popup. This should work. It worked for me. You can find the same below as a issue in code.google.com
http://code.google.com/p/android/issues/detail?id=33859

Android Support package not present in SDK Manager

Android Support package not present in SDK Manager:-

Solution:
"For some weird reason android-sdk decided to install everything in /extras/compatibility instead of /extras/support which eclipse recognises, so I renamed /extras/compatibility to /extras/support and now everything works fine."