Wrapper Material isn't rendering my shadow, only sometimes

Rendering V-Ray
1

My goal is to use a Wrapper Material to catch shadows in the alpha channel. I am attaching a little scene to show my problem. In the example I sent I have a shadow catcher mesh with a little box in front of it. The box should be casting a shadow on the mesh, but nothing renders. The material I am using is a Wrapper Material with a Standard as the base:

If you open the scene and unhide all, a plane with the exact same material as the mesh will appear. If you render again, the plane receives shadows, mesh still does not. Has anyone seen this issue before? Any suggestions will be greatly appreciated.

Thanks,

Ariel

Shadow_Catcher.3dm (1.8 MB)

2

@ariel

Flip the direction of the normals on the mesh in question. It should work after that.

3

Thanks again Matt! Worked great along with:

_RebuildMeshNormals

Thanks!

Ariel