Crash during Datasmith file reimport

General Feedback & Requests
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1

Hello
I suddenly cannot update/reimport my Twinmotion exported Datasmith file because it is crashing.
The error report is

Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\Obj.cpp] [Line: 231] Renaming an object (MaterialInstanceConstant /Game/Datasmith/07072023/Materials/MI_Bark.MI_Bark_3) on top of an existing object (MaterialInstanceConstant /Game/Datasmith/07072023/Materials/MI_Bark.MI_Bark) is not allowed

I am very sure ai did not rename any of those materials and I worked on this scene for a long time just today something happened.
The file was exported from Twinmotion.

Can someone help with a solution and maybe a way to avoid this ? That would be very appreciated? Again, I did not rename myself that material.

2

Same problem, did you solve it?

3

Sorry for late reply.
The only way i could avoid was to just delete that asset as it was not important. It happened a couple of times with some rocks imported from Twinmotion. The file was really geometry heavy and messy so maybe thatis one possible reason.

4

Hi to you both. You need to rename the Material Instances in TM that are clashing as per the Fatal Error log. ie Bark. Its a bug but once you rename in TM, try Datasmith again