Duplicate Special and proxy maya crash

[francomanko]

Hi,

so this is an odd one, but its reproducible for me not 100% but often ..but i dont know quite whats going on..but this was the process..its pretty bizarre..this is what i narrowed it down too, but i dont know how a render layer can be the cause...but...

• Created a polycube
• Made this a proxy
• Duplicate special as an instance.....everything is fine
• Add proxy to Display layer, duplicate as before....everything is wonderful
• Turn display layer visibility off : Duplicate..Bah...Instant crash.

This only seems to happen when duplicate special is set to instance.

Ive attached scene, possible the smallest one ever as its a cube... And a video showing it crash.

Maya 2019, Vray next. Win 10

[Dimitrina.Milanova]

I have taken a look at this problem and currently it's happening almost every time. I have logged an issue, which will be looked at as soon as possible. On the other hand we have a new VRayProxy node, with V-Ray 5 for Maya and this problem does not seem to be reproducing with it. We released V-Ray 5 for Maya yesterday and it has a trial version, which you can try.

[francomanko]

phew, i thought i was going mad..as it was quite an odd one.

[francomanko]

ok so i switched to vray5 and now the with mash and proxies im getting constant maya lockups with " Vray: Unhandled exception occurred, while applying changes to scene' Then if i try to click stop IPR cuda rendering, maya locks up.Not a crash, just complete lock up.

More and more i think its related to Mash stuff in the scene, but i cant be certain..I cant use next because it crashes, i cant use 5 because it locks up...great.

[Dimitrina.Milanova]

Are you using the same scene with V-Ray 5 when getting the crashes mentioned above? If not can you send a scene and a video, since I can not repoduce such lock up of Maya on both CPU and GPU.

[francomanko]

yeah, im getting the unhandled exception in 5, did it with a cube and mash.

Ipr doesnt update any mash changes, instead when i increased the amount of instances, the error occurred....the lock up of maya only occured when i clicked stop on the vfb. I've attached a video, sorry for the quality..the scene was literally a cube, instanced with mash.

[Dimitrina.Milanova]

So, I have followed the video and curtainly Maya is freezing every time I increase the instances (number of points) when IPR and GPU enabled. I have logged an issue into out system to be looked at.

[deyan.spirov]

Regarding the "Duplicate Special" issue, I believe this is a bug in Maya, specifically in the Invisibility Evaluator. I've reported it to Autodesk, hopefully they can fix it on their side.
As a workaround, you can use the following mel command to disable the Invisibility Evaluator and avoid the crash:

evaluator -enable off -name "invisibility"

There may be a minor performance penalty if you have a lot of invisible nodes in the scene.

[francomanko]

thanks for the info, much appreciated.