trying too render in arnold and for some reason that's what I get for alpha channel which I can use for compositing
screen-shot-2019-04-28-at-42400-pm.png
What is your Skydome Camera Visibility set to?
Do you have a background or image plane on the camera?
I will send the screen shots
camera is 0
screen-shot-2019-04-29-at-35459-pm.png
I will send the screen shots but camera image plane is non and the SkyDome camera is 0
If you have an image plane, it's because of a known issue with image planes and the alpha channel.
A possible workaround is to put this in the Render Settings > Diagnostics > User Options:
background_visibility 0
This issue will be fixed in the next mtoa update.
Thanks very much Stephen you are AMAZING and yes it worked
screen-shot-2019-04-30-at-103419-am.png
screen-shot-2019-04-30-at-103600-am.png
Unfortunatly, all this sheet dosen`t work whith GPU render. Alpha still there