title: Conda virtual environment not changing under Windows
body: <p>I have installed Anaconda 2.2.0 for Windows and created a virtual environment via:</p>
  
  <pre><code>&gt; conda create -n my-env anaconda
  </code></pre>
  
  <p>The environment is sucessfully created and I see it in my list of envinronments (and indeed the directory is there in Anaconda\envs..)</p>
  
  <pre><code>&gt; conda info -e
  # conda environments:
  #
  my-env                   D:\Anaconda\envs\my-env
  root                  *  D:\Anaconda
  </code></pre>
  
  <p>However, when running the activate.bat script to switch envinronment, although it appears to be successful the switch isn't actually made:</p>
  
  <pre><code>&gt; activate.bat my-env
  Activating environment "astropy-dev"...
  &gt; conda list -e
  # conda environments:
  #
  my-env                   D:\Anaconda\envs\my-env
  root                  *  D:\Anaconda
  </code></pre>
  
  <p>With the <code>*</code> indicating the active environment.</p>
  
  <p>I have seen some issues with conda activate on Windows but haven't found this sepecific issue.</p>
  
  <p>For further info: I am looking to copy the whole Anaconda package distribution and then install a dev version over one package.</p>