title: Can't install AIR 4.0 on old Android 2.3.3
body: <p>When I try to install AIR package version 4.0 (4.0.0.1390) on my Android emulator with Android 2.3.3 to test my app that I create, but I get this message : "Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES]". I use this SDK <a href="http://airdownload.adobe.com/air/win/download/4.0/AIRSDK_Compiler.zip" rel="nofollow">package</a>, and I want to install the runtime with this command :</p>
  
  <p>adb -s emulator-5554 install -r "C:\My_SDK_Path\runtimes\air\android\emulator\Runtime.apk"</p>
  
  <p>I tryed so with the "device" Runtime.apk just to try it : it works but unfortunely I've got this message when launching one AIR application : "The application XXXX has stopped unexpectedly". </p>
  
  <p>Later I worked out the same starting up on my emulator with Android 4.0.3 's image : I installed in the same order the two runtimes, one after one. The result is that emulator's runtime give the same error, and device's runtime returned no error message, so I was able to launch my app successfully... I didn't expected this behaviour !</p>
  
  <p>Moreover I can't see no limitations for the Android 2.3.3 capability with AIR in this <a href="http://helpx.adobe.com/en/flash-player/release-note/fp_12_air_4_release_notes.html" rel="nofollow">Adobe release notes</a>.</p>