How to reproduce:
1. Open the attached project "DiffusionProfile.zip"
2. Select Assets/SCR_SpikyHair.mat in the Project window
3. Select "Nightbeast" as a Diffusion Profile in the Inspector window
Expected results: No errors are thrown in the Console window
Actual results: NullReferenceException is thrown
Reproducible with: 2021.3.45f1, 2022.3.51f1, 6000.0.24f1, 6000.1.0a2
Reproducible on: Windows 10 22H2
Not reproducible on: No other environment tested