CORONA LIGHT MATERIAL INVISIBLE WITH OPACITY MAP WITH VR CAMERA MODE

[aurorafactory]

Hi
I'm having an issue rendering a corona light material with an opacity map with a corona camera in VR mode.
I'm using corona 4 with 3dsmax 2016.
The material renders fine with the same camera without the VR, and also renders fine with the VR mode if I untick the opacity map, but it won't render with the opacity map on with the VR camera mode.
I was initially rendering with a vray camera with a corona camera modifier, and had the same issue. Switched to a corona camera thinking this might be the problem, and I'm getting the same thing.
The material is applied to some flames in a fireplace. If I render in VR mode the flames are invisible as long as the opacity map is on (though they do emit light, as they are also in the lightmix).
Would like to know if anybody else has encountered this.
Thanks

[TomG]

Any chance of more info, such as the geometry the light material is applied to (a plane? Does it have anything unusual applied, e.g. to make it always face the camera? What is the mapping of the opacity map, just UVW, again, nothing more unusual that would involve the camera?) A look at renders might not hurt.  Does it happen with a regular Corona Mtl, either with self illumination or just with diffuse, to see if the opacity map in general has this problem, or if it's specific to the light material.

[TomG]

Just checked here and it worked as expected with a Corona Light material and a regular Corona Material - since it comes with the switch to a VR camera from a standard one, my first thought is still that either the plane itself or the mapping of the opacity is in some way camera-dependent, and can't work with a VR camera, so a UVW projection for the opacity map would be required.