title: Android Expansion Files Library Setup
body: <p>I have been trying to implement Expansion files unsuccessfully. I have included the libraries for Licensing, Expansion, and zip files as external jar files to the sample project and everything seems to be fine and all errors go away. When I run the program, however, I get an error that says:</p>
  
  <p>"05-22 17:49:05.377: E/AndroidRuntime(10197): java.lang.NoClassDefFoundError: com.android.vending.expansion.downloader.R$string"</p>
  
  <p>and the program crashes. How do I resolve this error so I can use test and then use the expansion library?</p>
  
  <p>Thanks.</p>