It always gives me a warning for invalid normals. Is this a problem or can it be ignored?
It’s not a problem for the rendering, but the warnings do slow things down.
Can you get me a scene for this to support@chaosgroup.com ?
Best regards,
Vlado
I will send the scene.
Vlado, we have been having similar issues with Ornatrix, here is a sample file you may download.
Thanks,
Thanks, it’s embree related and we are looking at it.
Nkal, actually your issue turned out to be different - it occurs when you use randomized length of the hairs with relatively short hairs as base and of course Embree. Anyway, it will be fixed 
Hi Richard,
Thank you for sending us the requested scene.
The issue is reproduced and added to our dev. system.