KS exports the clown pass as PNG when EXR is enabled for export.
Hello Eugen,
Thank you for posting. The EXT output option refers to your main image. Your clown pass will always be a PNG. As a workaround, you can use the flat material on your model to create your own clown pass.
Due to inactivity on this post it will be set to RESOLVED and closed. If you are still having the same issues please open a new thread on the forum or contact us direct at Support@luxion.com
Thank you