odd black areas in renders

I have created a solution for an animation using LC (2000 samples, duration of the animation) for the secondary and IRmap (med, every 25th frame) for the primary. The rendered images from the solution look like this:

Any ideas what is going on with the black areas?

Once I get indoors - just around the corner, the images look OK. Its like a chunk of the solution is missing or something.

Any overlapping faces ?

Best regards,
nikki Candelero

Pretty sure there aren’t but I’ll triple check.

Yes, I’d say you are missing some of you solution.

Looks like there is no GI. Use the IMAP viewer to look at the solution. your probably missing some of it. the machine that created the IR map might have dumped in the middle and then restarted the process mid frames.