Vray wrapper material rendering problem.

[Ikehegwus23]

I have the vray infinite plane set and a wrapper material applied to it. There's also a background image in my environment rollout. I added shadows to my wrapper material and I'm getting good results in my interactive render. But once I click on the final render, the infinite plane shows as a grey plane instead of being transparent and leaving me with my image base of choice. Its really frustrating. Please help someone.