Area Lights rotate 90º for no reason

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roskilla23º
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Joined: Wed Dec 05, 2018 3:40 am

Area Lights rotate 90º for no reason

Post by roskilla23º » Tue Jan 29, 2019 3:58 am

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.
Captura de pantalla 2019-01-28 a las 16.45.28.png
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.

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OnoSendai
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Re: Area Lights rotate 90º for no reason

Post by OnoSendai » Wed Jan 30, 2019 7:43 pm

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

roskilla23º
Posts: 10
Joined: Wed Dec 05, 2018 3:40 am

Re: Area Lights rotate 90º for no reason

Post by roskilla23º » Wed Jan 30, 2019 11:22 pm

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.

roskilla23º
Posts: 10
Joined: Wed Dec 05, 2018 3:40 am

Re: Area Lights rotate 90º for no reason

Post by roskilla23º » Wed Feb 06, 2019 10:52 am

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

Thanks!!!

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OnoSendai
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Location: Newcastle upon Tyne, UK
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Re: Area Lights rotate 90º for no reason

Post by OnoSendai » Thu Feb 07, 2019 12:24 pm

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.

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