I tried w/3.52 in Maya 2017 yesterday at work and loading up an OSL file (thin film) causes and automatic crash of Maya. OSX - El Crap.
Thanks for bringing our attention to this. We have logged it in our bug tracker and will post here on any updates.
This has been fixed for the next service pack release.
First time I have tried to create an iridsescent effect in Maya, so maybe there is an updated way - but the TexOSL causes and instant crash of Maya 2018 (using the Vray Next for Maya hotfix1.
Is this still on macOS?
Can you post the osl file you’re using?