title: Eclipse and Google App Engine: ImportError: No module named _sysconfigdata_nd; unrecognized arguments: --high_replication
body: <p>Just upgraded to Ubuntu 13.04 and Eclipse complained with the following 2 errors:</p>
  
  <pre><code>1. ImportError: No module named _sysconfigdata_nd
  
  ERROR    2013-03-25 07:26:43,559 http_runtime.py:221] unexpected port response from runtime ['']; exiting the development server
  ERROR    2013-03-25 07:26:43,561 server.py:576] Request to '/_ah/warmup' failed
  
  2. dev_appserver.py: error: unrecognized arguments: --high_replication
  </code></pre>
  
  <p>I've never encountered the first one. And for the second, I used to run google app engine applications by setting the <code>--high_replication</code> argument and it worked well. Why all the sudden, these two didn't work? Thanks in advance.</p>