<html><head></head><body><div style="font-family:times new roman, new york, times, serif;font-size:16px;"><div><p class="ydpcead9eafMsoNormal">When we install QGIS 2.14 or 2.18 on our lab machines
running Windows 7 using our software distribution system, everything works fine
except the polygonize tool. When we install QGIS on standalone machines this
tool tends to work fine in most (but not all) cases, occasionally we get the
same problem. I’m struggling to find the cause of this.</p>
<p class="ydpcead9eafMsoNormal"> </p>
<p class="ydpcead9eafMsoNormal">To reproduce:</p>
<p class="ydpcead9eafMsoNormal"> </p>
<p class="ydpcead9eafMsoNormal">1) Load a raster file.</p>
<p class="ydpcead9eafMsoNormal">2) Raster->Conversion->polygonize. Choose the input
raster and somewhere to write the output vector file and select 'DN'.</p>
<p class="ydpcead9eafMsoNormal"> </p>
<p class="ydpcead9eafMsoNormal">Error:</p>
<p class="ydpcead9eafMsoNormal"> </p>
<p class="ydpcead9eafMsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif">Traceback
(most recent call last): <br>
File "c:\Programs\QGIS\bin\gdal_polygonize.py", line 35, in <br>
from osgeo import gdal <br>
File
"c:\Programs\QGIS\apps\Python27\lib\site-packages\osgeo\__init__.py",
line 21, in <br>
_gdal = swig_import_helper() <br>
File
"c:\Programs\QGIS\apps\Python27\lib\site-packages\osgeo\__init__.py",
line 17, in swig_import_helper <br>
_mod = imp.load_module('_gdal', fp, pathname, description) <br>
ImportError: DLL load failed: The operating system cannot run %1. </span></p>
<p class="ydpcead9eafMsoNormal"> </p>
<p class="ydpcead9eafMsoNormal"> </p>
<p class="ydpcead9eafMsoNormal">Any suggestions gratefully received.</p>Regards</div><div>Damion Theobald</div></div></body></html>