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Crash in ig4icd32.dll during start up

Posted: Mon Jul 17, 2017 8:58 am
by andrew
From a QCAD/CAM user:
My QCAD/CAM installation under Windows crashes during start up in ig4icd32.dll.

Re: Crash in ig4icd32.dll during start up

Posted: Mon Jul 17, 2017 8:59 am
by andrew
ig4icd32.dll is related to OpenGL and it looks like the Qt people are aware of this problem which seems to be related to a particular graphics card:

https://bugreports.qt.io/browse/QTBUG-40991

Their suggested workaround is to set the environment variable QT_OPENGL to force the application to use angle instead of desktop OpenGL:

QT_OPENGL=angle

Alternatively, you can also disable OpenGL altogether (and lose the 3D CAM simulation widget of QCAD/CAM) by deleting the respective QCAD plugin of your QCAD/CAM installation under:

plugins\qcadgles3d.dll