Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion

[Aram Avetisyan]

Another issue I would like to report which seems like a bug that has been in the past versions also. When you use IPR with regions, the stop IPR button is greyed out so you cannot put a stop to the IPR. But If you move or scale an edge of the region the stop button then appears so you can then click it.

Please let's keep the discussion in this thread only related to V14 previews.
What you are mentioning is because IR reaches the pass limit and stop rendering, unless you update scene/region/material etc.

[dfcorona]

Another issue I would like to report which seems like a bug that has been in the past versions also. When you use IPR with regions, the stop IPR button is greyed out so you cannot put a stop to the IPR. But If you move or scale an edge of the region the stop button then appears so you can then click it.

Please let's keep the discussion in this thread only related to V14 previews.
What you are mentioning is because IR reaches the pass limit and stop rendering, unless you update scene/region/material etc.

Under stood, but this has to do with V14 also. A lot of times you want to stop the IPR cause you want to make a bunch of changes to materials and don't want it to refresh constantly. But your only option is to close or move region to hit stop button. Many times you still want VFB open for reference. The IPR reaching it limit and stopping isn't actually stopping IPR, cause any new move refreshes IPR. I'll make a topic somewhere else for this, sorry I didn't think I was going outside the preview builds since this was happening in V14 also.

[romullus]

Under stood, but this has to do with V14 also. A lot of times you want to stop the IPR cause you want to make a bunch of changes to materials and don't want it to refresh constantly. But your only option is to close or move region to hit stop button. Many times you still want VFB open for reference. The IPR reaching it limit and stopping isn't actually stopping IPR, cause any new move refreshes IPR. I'll make a topic somewhere else for this, sorry I didn't think I was going outside the preview builds since this was happening in V14 also.

This has nothing to do with preview builds specifically. That behaviour is there from the very beginning, if you want it to be changed, the best place to ask/discuss it is Corona ideas portal https://chaoscorona.ideas.aha.io/ Be sure to do a quick search before submitting your request - i remember there were several discussions about option to explicitly stop IR after it reached stopping condition - someone may already posted request about that on the portal.

edit: sure enough, this is already requested, you may want to cast your vote here: https://chaoscorona.ideas.aha.io/ideas/CMAX-I-71

[luis.lab]

Hi, I’ve been testing the new daily build and noticed an issue: every time I adjust Lightmix values by spinning them with the mouse, 3ds Max freezes completely. If I type the values in manually with the keyboard everything works fine, but the mouse interaction always causes a freeze. Unfortunately, no error message appears, so I can’t provide a minidump. This happens consistently on my system.
Hopefully the team can look into it, as the new features are otherwise working great.

3dsMax 2025, Corona last daily

[TomG]

Do you mean freezes temporarily for a time, or freezes permanently? If the latter, then you can force a minidump, see "Crashes, Errors, Freezes - Collecting the Minidump File (When the Autodesk Error Report Window is not Available)" in https://support.chaos.com/hc/en-us/articles/4649117083409-How-to-report-issues-3ds-Max

[luis.lab]

Hi Tom,
Freezes permanently.
I will check how to force a minidump and will send it when I get a chance.
Thank you

[TomG]

TY for the extra info, and for looking into forcing a minidump - much appreciated :)

[Aram Avetisyan]

Hi Tom,
Freezes permanently.
I will check how to force a minidump and will send it when I get a chance.
Thank you

Does it happen only with the daily build? Does it happen in any scene. I cannot reproduce it with DB on a fresh new scene with lights and lightmix.

[maru]

LightMix freeze - reproduced and reported as (Report ID=CMAX-1853).

[luis.lab]

Hi
Yes, happens in any scene.
I have already sent the minidump to the ticket support section, as Tom asked.
Thank you.

[Abdullah_Alallah]

there's an issue that im facing that im not sure is related to the latest Corona or max 25.3, ever since i updated my max to deal with the instant crash it would seem that the assign material to selection button the slate matereial editor is useless. it simply doesn't work as i would have to right click on the material and select assign material to selection through the right click menu. Using the 22/8 Build and max 2025.3


UPDATE: Found a way for it to work in case anyone is facing the same issue, you just have to uncheck the mouse pointer button (in yellow) then assign material button will work normally

[maru]

It's commonly reported by users and it seems to be a 3ds Max issue unrelated to Corona. The workaround I am using is selecting a material and pressing the A key to assign it.

[romullus]

The lack of QA at Autodesk is mind blowing. 2026.3 is probably the worst update ever, zero new features, bunch of new bugs.

[CharlyRT]

there's an issue that im facing that im not sure is related to the latest Corona or max 25.3, ever since i updated my max to deal with the instant crash it would seem that the assign material to selection button the slate matereial editor is useless. it simply doesn't work as i would have to right click on the material and select assign material to selection through the right click menu. Using the 22/8 Build and max 2025.3


UPDATE: Found a way for it to work in case anyone is facing the same issue, you just have to uncheck the mouse pointer button (in yellow) then assign material button will work normally

It has been solved in max 26, but I recommend to use 26.1, in the end I got used to "A" button shortcut

[dfcorona]

Hi, I think there might be an issue with Gaussian Splats.  I attached two render comparing Vray GS vs Corona GS.  Vray's of course looks correct, not sure what is happening with Corona.