Hdr shadows disappeared in Arnold

#1

I’m using hdri with skydomeai and was getting some nice shadows , however when I added another light to the scene the shadows disappeared so I undid that expecting shadows to come back but no joy . I’ve checked it is set to illuminate and cast shadows and for life of me can’t think why this is happening tried a different hdri and same problem it just does it to all of them now. Is there a bug in Arnold or is there something I need to do? Do I need to plug a shadow matte in anywhere? Any help is greatly appreciated and would stop me pulling my hair out

#2

your shadow links might be screwed up. It’s only happened to me once, so I just deleted the lights and started from scratch.

Or maybe Shadows are disabled in the diagnostics tab of the Arnold settings