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<p class="MsoNormal">Hello, everyone.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I need to install PyQt 5.6 (I can’t use a more recent version) on Windows 10 Pro 64 bit.  I hit problems so I went back to a clean installation, and can reproduce a core dump at will. Any advice is appreciated.  Starting from a clean 64-bit
 installation of Python 3.5.3:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">C:\Users\gehlhaar\Python35>Scripts\pip3.exe --no-cache-dir install "PyQt5 < 5.7"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">Collecting PyQt5<5.7<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">  Downloading PyQt5-5.6-cp35-none-win_amd64.whl (74.7MB)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">    100% |################################| 74.7MB 5.1MB/s<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">Collecting sip (from PyQt5<5.7)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">  Downloading sip-4.19.3-cp35-none-win_amd64.whl (49kB)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">    100% |################################| 51kB 5.7MB/s<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">Installing collected packages: sip, PyQt5<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">Successfully installed PyQt5-5.6 sip-4.19.3<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">C:\Users\gehlhaar\Python35>.\python<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">Python 3.5.3 (v3.5.3:1880cb95a742, Jan 16 2017, 16:02:32) [MSC v.1900 64 bit (AMD64)] on win32<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">Type "help", "copyright", "credits" or "license" for more information.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New"">>>> from PyQt5.QtCore import *<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New""><crash><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am flummoxed here… Any ideas?  I am attempting to build PyQt5 from source but somehow I am not confident that will help…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Dan<o:p></o:p></p>
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