Community
I cant create cryptomatte AOV.
Maya log:
# Error: RuntimeError: file C:\Program Files\Autodesk\Arnold\maya2020\scripts\mtoa\aovs.py line 173: setAttr: The attribute 'initialParticleSE.aiCustomAOVs[0].aovName' is locked or connected and cannot be modified.
The real question is how to get a scene into a state where initalParticleSE is locked?
Try running this MEL script:
lockNode -lock off -lu off initialParticleSE