VRayVertexColors does not work in ExtraTexRE

Hi guys,

i have a serious problem getting my vertex color attributes into an ExtraTex. It only works if the extra tex is connected to shader that I see in the main RGB framebuffer but does not work as an additional ExtraTex.
Please see the attached .mb-file. In there are two renderlayers…on the surfaceShader layer everything renders fine inside the LP renderelement, but on the “lambert” layer my LP pass is black.

I used stable build 22430 where the error is present. On the nightly build 22881 it instantly crashes maya on the “lambert” renderlayer…
We are still using Maya2012 SAP…

Is there a possibility to have a quick fix for this … PLEEEEAAAASSEEE

thx in advance
Oliver
render_vertexColor_as_ExtraTex.mb.zip (32.4 KB)

bump! …anyone investigating that already?

I had a look at this, but it might not be an easy fix… will have to try a few things to see what happens.

Best regards,
Vlado