the slaves don’t properly render objects with light vraylightmat in DR mode in 1.5 - you end up getting squares with different light levels.
they all do it fine if rendering solo under bb though. but put dr on and all of a sudden some are rendering the light coming from the object at different intensities.
these machines will otherwise render just fine all day without this light type
Maybe check to make sure your servers all have the same service packs…we had a bizarre issue here with reflections appearing differently because one slave was missing an extension to the productivity pack…
seems odd that it would go fine through bb though- Is it repeatable with a simple test scene?