title: Couldn't start vimrun.exe on shutdown on Windows
body: <p>I wrote the following code in .vimrc to save last session of vim. Normally, it works. But when shutting down Windows, it doesn't work correctly according to the error of failure about starting vimrun.exe.</p>
  
  <pre><code>au VimLeavePre * call xolox#session#auto_save()
  </code></pre>
  
  <p>The <code>auto_save</code> methods uses <code>vimrun.exe</code>. As you know, it happens because Windows prohibit a new process to start on shutdown.</p>
  
  <p>Is there any way to avoid the failure?</p>
  
  <p>Windows 7 x64
  gvim.exe 7.4</p>