title: "Android library projects cannot be launched" in Facebook Android tutorial
body: <p><br/>
  <br/>
  I installed both the Android and Facebook SDKs. I did all the steps in <a href="http://developers.facebook.com/docs/mobile/android/build/#sdk" rel="nofollow">http://developers.facebook.com/docs/mobile/android/build/#sdk</a> till Step 6.3. 
  <br/>
  <br/>
  In step 6.4, when I try to run the project in Emulator (Using Android 4.0.3), I get "Android library projects cannot be launched" and the project doesn't proceed further. Even the logcat doesn't have any content.
  <br/>
  Can someone please tell me what may be the problem?
  <br/>
  <br/>
  Thanks
  <br/>
  Souvik</p>