title: Pycharm Virtulenv "non-zero exit code" after install wheel or module from pip
body: <p>After installing kivy via a wheel i came upon an error in Pycharm when i refreshed my virtual env for python 3.4. The error is in the section</p>
  
  <p>Pycharm: Projects ->
     Project Interpreter -> [Virtualenv packages]</p>
  
  <p>Error/warning along the bottom shows "non-zero exit code"</p>
  
  <p>My environment:
  Windows 8.1 64-bit
  Python 3.4.3 32-bit
  Pycharm 4.5.4
  Virtual env - 3.4.3</p>
  
  <p>This happened after i installed a wheel from "<a href="http://www.lfd.uci.edu/~gohlke/pythonlibs/" rel="noreferrer">http://www.lfd.uci.edu/~gohlke/pythonlibs/</a>" (which is an awesome site... check it out) from the command line.</p>
  
  <p>first i installed pygame from the downloaded wheel file located at"<a href="http://www.lfd.uci.edu/~gohlke/pythonlibs/" rel="noreferrer">http://www.lfd.uci.edu/~gohlke/pythonlibs/</a>:</p>
  
  <pre><code>C:\Users\&lt;user_name&gt;\3.4Python_32Bit\Scripts&gt; pip3.4.exe install C:\Users\&lt;user_name&gt;\Downloads\pygame-1.9.2a0-cp34-none-win32.whl
  </code></pre>
  
  <p>next i adjust the cython version:</p>
  
  <pre><code>C:\Users\&lt;user_name&gt;\3.4Python_32Bit\Scripts&gt; pip3.4.exe install -I Cython==0.21.2
  </code></pre>
  
  <p>then i installed kivymd &amp; kivy garden via the pycharm virtualenv interface within pycharm - both installed successfully.</p>
  
  <p>Finally i tried to install "kivy"</p>
  
  <p>The results were initially good, it showed installed, the package loaded in the virtualenv within pycharm, but when i reloaded the virtualenv in pycharm to associate it to a package the pycharm interface showed "non-zero exit code." How can this be fixed, there is no other errors visible?</p>