How to fix black emissive light mtl from vray lightmtl?

Hi! I need some help please,

For some reason the meshes that have emissive light material, are now totaly black. The emissive material comes from a vray light material exported with datasmith in 3dsmax.

In the edit windows it seams ok, but in the play or the main window it appears black. I already tried to change the light map coord to 1 and it doesn’t do anything…

Somebody help me with this please because I’m getting crazy!

Hey bud, we should commiserate over Datasmith foibles. The only workaround I’ve found is to multiply the input node. Anything on your end?