I’m doing an interior shot and wanted to do a multi-element pass to play with reflections in comp, all my passes are fine except vrayshadows which looks like the attached image. I’ve deleted the render element and re-loaded it, shut down and re-opened the file just in case it was a hiccup in the software but it changes nothing. Anyone have any ideas?
After some playing around I’ve discovered the problem is coming front the main vray plane at the front door, I’ve replaced it with a new one but to no avail. I’ve tried moving the plane inside the hall and playing with shadow bias and sampling rate but nothing changes.
This might be a wild guess but does the problem go away if you use “Full lights evaluation” instead of “Adaptive lights” in Global Switches? You may have to switch to Advanced or Expert settings to see the dropdown list.
YES!!! Thanks Alex, you’re a star I’d never have thought of looking there, strange it would cause an issue in the test above that only had a single light in it though.
Good to hear. 
Actually, there were a couple of threads around here lately about issues with the shadows where the problem turned out to be the use of Adaptive Lights. So maybe my guess was not so far fetched after all.
This issue is fixed for the next update. If you want a fixed build, email me to vlado@chaosgroup.com
Best regards,
Vlado
Thanks Vlado, I’ve sent you an e-mail.