This error message appears when there is a V-Ray Light in the scene using an unsupported color mode or intensity unit.
Supported color modes: direct color input, Kelvin temperature
Supported units: Default (image), Luminous power (lm), Luminance (lm/m/sr), Radiant power (W), Radiance (W/m/sr).
Solution: make sure all V-Ray Lights in your scene are using the supported color modes and intensity units. In case some of them are using unsupported color modes or units, please change them manually, use the V-Ray light lister, or a 3rd party script or plugin.
If you are sure that there are no V-Ray Lights using unsupported features in your scene and you still see this error message, or if you have any questions about it, please contact us.