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Hello,</div>

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I am one of the maintainers of the Plugin <span style="background-color:rgb(255, 255, 255);display:inline !important" class="ContentPasted1">

(FUSION for Processing) </span>that makes is possible to use FUSION LVD LIDAR analysis and visualization software in QGIS on Windows computers. I am experiencing a very strange issue that I do not understand. It appears using PolyClipData64.exe via a the subprocess

 Python library.</div>

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With the test data I use I can run the tool via a command prompt using the command below: </div>

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<b class="ContentPasted3" style="font-family: inherit; font-size: 12pt; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit;">"C:/FUSION\PolyClipData64.exe" /class:1 "D:\LidarQGISFUSION\FastighetskartanVektor_1501_3006\by_get.shp"

 "D:/LidarQGISFUSION/tempfromscript/test.las" "D:\LidarQGISFUSION\tempfromscript\clippedLidar.las"</b><br>

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Then I make use of the function Popen in subprocess in the Python console in QGIS without error:</div>

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<b>fused_command = '"C:/FUSION\PolyClipData64.exe" "/class:1" "D:/LidarQGISFUSION/FastighetskartanVektor_1501_3006/by_get.shp" "D:/LidarQGISFUSION/tempfromscript/test11.las" "D:/LidarQGISFUSION/tempfromscript/clippedLidar.las"'<br class="ContentPasted4">

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<b>subprocess.Popen(fused_command,shell=True,stdout=subprocess.PIPE, stdin=subprocess.DEVNULL,stderr=subprocess.STDOUT,universal_newlines=True)</b><br>

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<span style="color: black; font-size: 12pt;">But when I use the same code snippet in my processing plugin it fails.</span><br>

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Does anyone have an idea what might be going on here?</div>

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Any suggestion highly appreciated!</div>

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/Fredrik</div>

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