title: OpenCV 2.4.8: module compiled against API version 9
body: <p>I just installed the opencv 2.4.8 . I'm using python 2.7. I tried to add the opencv lib to  python according to this <a href="http://docs.opencv.org/trunk/doc/py_tutorials/py_setup/py_setup_in_windows/py_setup_in_windows.html">tutorial</a>. but when I tried to import the opencv I got this error:</p>
  
  <pre><code>import cv2
     RuntimeError: module compiled against API version 9 but this version 
     of numpy is 7
  
     Traceback (most recent call last):
     File "&lt;pyshell#2&gt;", line 1, in &lt;module&gt;
     import cv2
     ImportError: numpy.core.multiarray failed to import
  </code></pre>
  
  <p>I <em>updated</em> my scipy and numpy packages to its <em>latest version</em>, but I got the same error. How to fix this problem? I googled it but I found some solutions for Mac OS.</p>
  
  <p>I use Windows 7.</p>