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Author Topic: 3Ds Max crashes with combination of FP Object and Lights  (Read 1207 times)

OU9561

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3Ds Max crashes with combination of FP Object and Lights
« on: March 07, 2023, 12:52:04 PM »
I'm trying to narrow it down as much as possible, but here are two max files. One has some Forest Pack Objects and the other just some lights. Both render fine on their own.
https://www.dropbox.com/s/oln0881ezdm58u5/Forests.zip?dl=1
https://www.dropbox.com/s/1v36n51pcsaemmv/Lights.zip?dl=1

But, if I merge the lights into the Forests file, max crashes when rendering:

Code: [Select]
Date/Time: 2023-03-07 08:33:34 -03:00
Application: 3dsmax.exe
Error: Access violation - code c0000005 (first/second chance not available)
Crashed Module Name: DLlights.dlo
Exception Address: 0x00007ff9870e942a
Exception Code: c0000005
Exception Flags: 0
Exception Parameters: 0, 118

Minidump: https://www.dropbox.com/s/iqsfpoq3q60wji7/3dsmax_minidump.dmp?dl=1

Using 3ds Max 2023 with Vray 6 Hotfix 3

OU9561

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Re: 3Ds Max crashes with combination of FP Object and Lights
« Reply #1 on: March 07, 2023, 08:06:56 PM »
I narrowed it down. It appears to be a problem between Forest Pack and IES lights. It doesn't happen with all IES lights, only some. If I instantiate the Forest Objects, the scene renders fine.
« Last Edit: March 08, 2023, 02:58:37 AM by OU9561 »

iToo

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Re: 3Ds Max crashes with combination of FP Object and Lights
« Reply #2 on: March 08, 2023, 09:30:18 AM »
What crashes is the Autodesk plugin for IES lights, when called by V-Ray. I don't know what is the relation with Forest.

Please hold on, i just wrote to ChaosGroup about it.

Carlos Quintero
iToo Software

OU9561

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Re: 3Ds Max crashes with combination of FP Object and Lights
« Reply #3 on: March 10, 2023, 03:17:21 AM »
Any news on this or a workaround? I feel that this has to be a recent problen, I never had this before and now it's happen on 3 different projects.

iToo

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Re: 3Ds Max crashes with combination of FP Object and Lights
« Reply #4 on: March 10, 2023, 08:52:06 AM »
Chaos team continues checking it. No news yet, sorry.

Crash happens in the IES lights plugin (the 3DS Max photometric lights). I suggest to replace them by VRayIES.

Carlos Quintero
iToo Software

iToo

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Re: 3Ds Max crashes with combination of FP Object and Lights
« Reply #5 on: March 15, 2023, 08:16:40 AM »
Hi,

ChaosGroup have identified the problem, and they will include a workaround in next V-Ray update.

Anyway, there are some compatibility issues with 3DS Max photometric lights, which cannot be solved. For example, instanced geometry is not illuminated by them.
They encourage to use VRayIES instead, which work much better with V-Ray.

Carlos Quintero
iToo Software