# \[UE4.20\] Editor Crash; NvCloth; Physics Asset

**URL:** <https://forums.unrealengine.com/t/ue4-20-editor-crash-nvcloth-physics-asset/434644>\
**Category:** World Creation\
**Tags:** unreal-engine, crash, UE4, question\
**Created:** [September 28, 2018, 7:28am UTC](https://forums.unrealengine.com/t/ue4-20-editor-crash-nvcloth-physics-asset/434644 "2018-09-28T07:28:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![givaousthe](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@givaousthe](https://forums.unrealengine.com/u/givaousthe)\
**Post date:** [September 28, 2018, 7:28am UTC](https://forums.unrealengine.com/t/ue4-20-editor-crash-nvcloth-physics-asset/434644/1 "2018-09-28T07:28:09Z")

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steps:

1. Open the Content Examples project.
2. Find the physics asset named ‘Owen\_Physics’ and open
3. Choose a bone and add a body
4. Crash with:

NvClothPROFILE\_x64!avx::solveConstraints\<0,2\>() [d:\build++ue4+release-4.20+physx\_compile\sync\engine\source\thirdparty\physx3\nvcloth\src\avx\swsolveconstraints.cpp:206]

NvClothPROFILE\_x64!nv::cloth::SwSolverKernel\<\_\_m128\>::solveFabric() [d:\build++ue4+release-4.20+physx\_compile\sync\engine\source\thirdparty\physx3\nvcloth\src\swsolverkernel.cpp:646]

NvClothPROFILE\_x64!nv::cloth::SwSolver::SimulatedCloth::Simulate() [d:\build++ue4+release-4.20+physx\_compile\sync\engine\source\thirdparty\physx3\nvcloth\src\swsolver.cpp:292]

NvClothPROFILE\_x64!nv::cloth::SwSolver::simulateChunk() [d:\build++ue4+release-4.20+physx\_compile\sync\engine\source\thirdparty\physx3\nvcloth\src\swsolver.cpp:161]

UE4Editor\_ClothingSystemRuntime!FClothingSimulationNv::Simulate() [d:\build++ue4\sync\engine\source\runtime\clothingsystemruntime\private\clothingsimulationnv.cpp:672]

**The reason is that ‘Owen’ mesh has two NvCloth Data. If only one, no problem.**  
Now I just work around it by Choosing all of the cloth section and remove cloth data → modify physics asset (such as add a body) → Re-apply cloth data. It’s OK.

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**Author:** ![anonymous\_user\_2c429cad](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_2c429cad](https://forums.unrealengine.com/u/anonymous_user_2c429cad)\
**Post date:** [October 8, 2018, 3:51pm UTC](https://forums.unrealengine.com/t/ue4-20-editor-crash-nvcloth-physics-asset/434644/2 "2018-10-08T15:51:33Z")

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Hello,

This is a known issue. [Unreal Engine Issues and Bug Tracker (UE-63551)](https://issues.unrealengine.com/issue/UE-63551)

Thank you

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**Author:** ![Marthalion](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Marthalion](https://forums.unrealengine.com/u/Marthalion)\
**Post date:** [December 8, 2018, 12:39am UTC](https://forums.unrealengine.com/t/ue4-20-editor-crash-nvcloth-physics-asset/434644/3 "2018-12-08T00:39:33Z")

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Trying to find this specific git commit in 4.21 (we’re still on 4.20.3 and can’t upgrade for a while). Can anyone point me in the right direction? Thanks!