title: IBM Waston - Retrieve and Rank
body: <p>I'm following the retrieve and rank tutorial and everything is good until the train.py script - I get an error message below:</p>
  
  <pre><code>Generating training data...
  Traceback (most recent call last):
    File "./train.py", line 83, in &lt;module&gt;
      process = subprocess.Popen(shlex.split(curl_cmd), stdout=subprocess.PIPE)
    File "C:\Python27\lib\subprocess.py", line 710, in __init__
      errread, errwrite)
    File "C:\Python27\lib\subprocess.py", line 958, in _execute_child
      startupinfo)
  WindowsError: [Error 2] The system cannot find the file specified
  </code></pre>
  
  <p>Any ideas?</p>