VrayMtlWrapper and Fume1,2

[jedihopper]

I have a scene with particles and a fume simulation, now I want to render the scene with matte/shadow material on the ground plane so I have used VrayMtlWrapper as material. But the fire is not visible were ground plane cover the FumeFX see atteched, Is it something I missed to uncheck or check?

[Jordan]

Looks like you have the old "Apply Atmospherics at Background Depth" turned on with a Matte/Shadow material. The VrayWrapper is not wrapping a Standard Matte/Shadow is it?
Either way I find using the Vray object properties a bit more stable than using VrayWrappers to set matte objects.