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Ariff Jeff avatar image
Ariff Jeff asked ·

C4D crashes when switching between render settings while IPR is running.

This might obviously be a C4D problem and not an Arnold problem but I have no idea.


With the IPR running, C4D will crash if you click to switch to another entire set of render settings. C4D will freeze for about 5 seconds after you click. then it will crash.

i.e. Running one render setting group for fast IPR preview with 720p, camera (AA): 2, diffuse: 1, etc.

then click to switch to another group for final render settings of 1080p, cam AA 7, diffuse: 9, whatever, etc.

If you can't get it to crash then try to keep clicking between render settings groups somewhat quickly.


I know this is a broad jab in the dark but I wasn't sure if it was a known problem or not.

ipr
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Peter Horvath avatar image
Peter Horvath answered ·

Thanks for the scene, I could reproduce the issue with it. Switching between render settings with and without a custom color manager causing the crash. It was actually reported before through a different channel and I already have a fix ready to be released in the next version.

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Good stuff. Thanks, Peter!

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Ariff Jeff avatar image
Ariff Jeff answered ·

I'm running C4D Education R20.059
C4DtoA 3.0.2.1 [4fb1c1c7]
Arnold core 6.0.2.1

Seems to be a specific scene that I have right now. It only seems to crash when I switch from my PNG 1080p render settings group to the PNG 720p group. Not the other way around, or to any other group settings.

I just did some more testing and found that it also rarely just freezes C4D completely but doesn't crash - and leaves my CPU maxed out at 100% usage. The only thing I can do is that it still lets me close C4D without having to force close it via task manager, but I can't reopen C4D because of some background(?) process that I have to force close.

I'll attach my scene for you.

Google Drive folder for scene files

I hope that the custom render settings actually transfer with the c4d files.


I have Octane plugin installed as well btw if that helps, even though I'm obviously not using it when C4D crashes with Arnold.

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Peter Horvath avatar image
Peter Horvath answered ·

I had not similar reports so far and I could not reproduce it, even when switching quickly. I tried with a basic scene though, C4DtoA 3.0.2 on Windows. Does it happen only in a specific scene or any scene? Maybe it depends on the actual settings?

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