Hi,
In my scene i have area lights with mia photometric + IES profile...for warmer color I've given a color correction node (.454/.454/.454) with mia blackbody at 5000!! So a breackdown color correction and render the passes show all the lights...:-)

It's possible to fix this??

David, how can i send you the .exr file? That problem of "spikes" pressists !!

Thank you very much, the tutorials are the best :-)