title: Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
body: <p>I am currently trying to compile and test a small Android Application.</p>
  
  <p>I am using Eclipse, and have SDK 4.2 (Api Level 17) installed. 
  I've set </p>
  
  <pre><code>&lt;uses-sdk android:targetSdkVersion="17" android:minSdkVersion="8" /&gt;
  </code></pre>
  
  <p>although I've tried also different values (i.e. 17/17).</p>
  
  <p>I do not use any GoogleAPI functions, nor do I use functions that are not available in API Level 8. Or at least I do not get any compile errors or warnings in that regard.</p>
  
  <p>When I compile the project and run it on a real device running Android 2.2.1 the Application runs fine. However when I try to run the application on an emulator (Android Virtual Device) with Android 4.2, Api Level 17 I get the following error:</p>
  
  <pre><code>[2012-12-10 21:10:29 - SoftKeyboard] Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
  [2012-12-10 21:10:29 - SoftKeyboard] Please check logcat output for more details.
  [2012-12-10 21:10:29 - SoftKeyboard] Launch canceled!
  </code></pre>
  
  <p>Logcat however is empty. I have really no clue, what this error even means...</p>