Hi There

I was wanting to test/use the new nested dielectric capability of the principled shader on a project I've been working on with 15.5.
I can open it in 16 if I turn update to manual but I update to display the scene it crashes and I get a segmentation fault.

Is there anything I can do or is this to be expected?

thanks
Nigel.

Are you using OSX?

Oh Sorry forgot to say. Running Windows 10

Crashes are not to be expected. Please submit the hip file with a bug report.