title: Pyinstaller missing bootloader
body: <p>I fresh installed Python37-32 on win10-64
  All requirements seem to be satisfied and my hello world python file is executing</p>
  
  <pre><code>if __name__ == '__main__' :
      print("hello world")
  </code></pre>
  
  <p>However when I try to use pyinstaller </p>
  
  <pre><code>pyinstaller hello.py
  </code></pre>
  
  <p>It finishes with error</p>
  
  <pre><code>5764 INFO: Building PKG (CArchive) PKG-00.pkg completed successfully.
  5764 INFO: Bootloader c:\users\xxxxxxx\appdata\local\programs\python\python37-32\lib\site-packages\PyInstaller\bootloader\Windows-32bit\run_d.exe
  5764 INFO: checking EXE
  5764 INFO: Building EXE because EXE-00.toc is non existent
  5779 INFO: Building EXE from EXE-00.toc
  
  Fatal error: PyInstaller does not include a pre-compiled bootloader for your
  platform. For more details and instructions how to build the bootloader see
  &lt;https://pyinstaller.readthedocs.io/en/stable/bootloader-building.html&gt;
  </code></pre>
  
  <p>It is a basic installation on windows, I should not have to recompile any bootloader manually (I am used to pyinstaller with older python versions and never had problems).
  Where should I look to solve this issue ?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>The error shows up in python37-32 but not in python37 (64bits)</p>