V-Ray 6 Render Stop automatically

[yi_xiang]

Hello again Chaos team,

I've tried V-Ray 6 recently, some features is really amazing, I appreciate your hard work, but I still met some bugs.
Render will Stop automatically after finished 2-5 frames while I was rendering multiple frames without any error or warning show in log. It always stop after finished random frame, sometimes after 2 frames, and it keep rendering 8 frames once, and then it stop. I guess it might because of the Scatter which I made some value animation like density and random rotation, when the Scatter shows in my scene and this bug will happen, but I can not 100% sure.

By the way, the value animation of Scatter also can't show in Max's preview. Like I want my seed increase gradually then I animated density value, but in Max preview Scatter looks like freeze.

I recorded my screen and upload my scene, maybe it can help you figure out what is happening.

Screen Recording:
V-Ray 6 Render stop at about 0:45 - YouTube
Files:
https://drive.google.com/file/d/1_to...ew?usp=sharing

Thanks.

[yi_xiang]

Oh I just found the V-Ray 6 Beta section of forum but I don't know how to change my post or delete it, is it OK to post in here?

[yavor.rubenov]

Hello,

Do you use any third party plugins - maybe tyFlow ? They are not updated for V-Ray 6 and are expected not to work properly.

Best regards,
Yavor

[yi_xiang]

Hi Yavor,

I do use tyflow, I will check it for more.

Thanks for reply

[yi_xiang]

Actually, I've test it again.

If I hide Scatter, render process will continue without problem, as you can see in the screenshot, it keep rendered for about 3 hours and finished 20 frames.
Once I unhide Scatter, the render will stop automatically after just 1 frame, I also recorded hole process.
(1) Render stop at about 11:45 - YouTube

Please, there were no any error or warning in log tab so I still can't find out what causes this BUG.

Thanks.

[yavor.rubenov]

But did you remove all tyFlow objects ?

[yi_xiang]

I uninstalled tyFlow just now and there are only V-Ray and Phoenix for V-Ray6 but I didn't use phx, it keep happening.

[nikoleta.garkova]

Hi yi_xiang,

We managed to reproduce the issue and it is, as you suspected, related to Scatter. Seems quite random - it sometimes renders the whole sequence, and sometimes stops after a random rendered frame.
Logged as VMAX-12246 so our devs could have a look. We'll let you know once we have more info - and thanks for the pointer!

[yi_xiang]

Hi Nikoleta,

I'm so glad to hear I can make some help, I'll waiting for the next update. Thanks for your reply.

[nikoleta.garkova]

Hi yi_xiang,

Can you please check the latest beta build and let us know if you're encountering the issues you described above?
You can download it from here - https://nightlies.chaos.com/main#/vr.../beta/20220610

[yi_xiang]

Hi Nikoleta,

I've tried the newest version and I think the problem is solved, nice job!

[william_junge]

I have exactly same issue right now in max 2024 with forest pack and tyflow (everything latest version). Do you know about any fixes or if its even known issue?

[william_junge]

By turning off things and rerender the culprit turned out to be "VrayProxy" once I turn them off it renders fine. I have quixel's high poly meshes as proxys there. Vray latest nightly build also installed to check if the bug persists, and it is in nightly as well

[yavor.rubenov]

It would be best if you could send the problem scene to our support.

[william_junge]

It would be best if you could send the problem scene to our support.

Im not sure that I can, its also more than 5gb only for max file

Update: in 2023 it renders without any problems