title: eclipse with android doesnt run application stuck at pre-launch chech stage
body: <p>A serious problem working with android dev with eclipse (with the plugin and sdk installed)
  when trying to run an application to the emulator - the progress bar shows:</p>
  
  <blockquote>
    <p>Launching: Performing pre-launch check..</p>
  </blockquote>
  
  <p>and stucks there- doesn't continue even after a couple of hours.
  I tried killing the adb process, running the emulator before the app and with 'wipe user info'
  but nothing helps - just stuck at this stage</p>
  
  <p>I also tried the answers at this <a href="https://stackoverflow.com/questions/3037512/android-application-doesnt-start-from-eclipse">thread</a> but didn't help (mostly the same suggestion I already tried)</p>
  
  <p><strong>edit</strong>: sometimes(I'm not sure all the times) I'm getting this in the logs:</p>
  
  <blockquote>
    <p>[2011-11-26 11:28:14 - hierarchyviewer]Unable to get view server
    version from device emulator-5554 [2011-11-26 11:28:14 -
    hierarchyviewer]Unable to get view server protocol version from device
    emulator-5554 [2011-11-26 11:28:16 - hierarchyviewer]Unable to debug
    device emulator-5554</p>
  </blockquote>
  
  <p>any ideas?</p>