Indigo Renderer Forum

Hello everyone, I really hope someone can help me out with this, as this is super annoying.....

I have a huge (around 2GB) C4D Project, with lots of animations going on but every light is fixed in place. What happens is that (sometimes) when I render using Bidir most of the area lights turn 90º and/or squeeze for no reason. So I have to delete them and create them again to solve the problem, but the following day I open the project and render the scene, I get the same error. This is super super annoying. How can I rely on this renderer when I'm having such a problem? What if I send the whole animation to a render farm, spend more than a 100$ and find out that I have most of my lights rotated?

Hope someone knows how to solve this problem as I'm about to send it to the farm but I won't till I know everything works as it should.

EDIT. I'm rendering on a MacPro 3,5 GHz 6-Core Intel Xeon E5. Using CPU only with Bidir at 1080p.
THE PROBLEM DOES ALSO APPEAR WHEN NOT USING BIDIR.

Are you using motion blur on the lights or any other objects?

Yes, Everything is rendered with motion blur. The only object that is moving is the car and the wheels, the lights are fixed in place, no animation.

Hey OnoSendai, any ideas how to solve the problem? I'm stuck to this point right now..

Thanks!!!

Can you send us one frame of the animation as a PIGS? Thanks.
You can upload to dropbox etc.. and send a link via email.