Rhino Octane 4.0 issue with Displacement going black

[andrebonnice]

Hi Paul,

Just been experiencing this issue with the latest Octane for Rhino (its never been an issue before). When using a displacement map some of the areas not displaced turn black, see images below:
One with displacement turned off and one on. The strange black areas don't appear everywhere just randomly. I've tried this on both RH5 and RH6 with the same issue happening.

[face_off]

Hi. Can you provide a sample scene and displacement map which produces this error please, and I will take a closer look.

Paul