Invalid light cache samples

V-Ray V-Ray for 3ds Max General
1

Hello,
I don’t understand why, during the irrMap prepass, I get the message
“Warning: Invalid light cache samples”
from the vray message window.

I’ve never seen this message in other scenes.

I’m using IM for the primary bounce and LC for the 2nd bounce.
It’s strange because the LC seem to be right in visualization, but as the IM prepass start I get this warning…

2

yeah, same question from me

3

Make sure all your materials are Vraymtl, I dont think LC likes standard max materials very much.
Also make sure things are properly mapped (UVW)