Kartoza - How to Resolve Issues with QGIS 3 Processing Dialog Layouts on MacOS

If you are using QGIS 3 master builds on MacOS and encounter issues with the display of processing dialog layouts like this:

 · 1 min read

If you are using QGIS 3 master builds on MacOS and encounter issues with the display of processing dialog layouts like this:



The problem is caused by the custom designer widgets python module for QGIS. To fix it you should rename or remove this file


mv /usr/local/lib/python3.6/site-packages/PyQt5/uic/widget-plugins/qgis_customwidgets.py \

 /usr/local/lib/python3.6/site-packages/PyQt5/uic/widget-plugins/qgis_customwidgets.py_


The actual location of this file may vary depending on your system. After removing the file, restart QGIS and you should see the dialog layout restored again:




Tim Sutton

Tim started his career by working in Nature Conservation in South Africa. Some years later, around 1998, an opening in the newly formed GIS group in the organisation where he worked presented an opportunity to combine his love of the environment with his enthusiasm for computers. What followed quickly became a deep dive into GIS (including obtaining a Master's Degree in GIS and Environmental Studies) and Open Source. He discovered Linux, also around 1998, and became an ardent fan of using and creating Open Source software. The announcement of the first release of QGIS in 2002 was another key milestone, with Tim quickly becoming deeply involved in the development of QGIS, as well as helping to build the community platforms and governance structures around the project. Formerly the QGIS.org Board Chair, Tim was awarded perpetual Honorary QGIS PSC Member status in 2018 and continues to play an active role in many aspects of the QGIS project. Tim is also engaged in the broader Open Source GIS ecosystem, including having the honour of being an OSGEO Charter Member and promoting the wide array of world-changing Open Source GIS tools provided under the OSGEO umbrella (and beyond) to pretty much anyone who will listen.

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