Something weird is happeing in houdini check the screenshot.

Basically if I render the same frame using render view or render to mplay or render to a file I have different result Mplay and the ouput file from Mantra are the same but the render view is different. It's only happening on the volume render not on regular geometry, I can't see any reason for that but maybe I forgot something. ?
Any clue ?

Thanks

Maybe you changed something , because result for both are same on my projects , can you upload your hip file !? :?

Sure thanks

If I switch the shadow from shadowmap to raytrace the preview render, the render to mplay and the render to frame look the same and are correct.
So something is wrong with the shadow map using Render to maply and render to frame !!!???