5.2.1 Build errors

Hello, hoping someone can shed a clue about what’s causing the below build errors on windows. Not a c++ programmer and this is the first time I’ve tried to package for shipping and I’m lost as to what it can’t find.

ATHelper: Packaging (Windows): FaceMeshSolve.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): FaceTracking.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): PCARigCreator.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): ImageIO.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): VertexWeights.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): solver_utils.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): string_functions.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
UATHelper: Packaging (Windows): JointRigOptimization.cpp.obj : error LNK2019: unresolved external symbol __std_find_trivial_8 referenced in function “class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * * __cdecl __std_find_trivial<class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > *,class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > *>(class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * *,class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * *,class epic::nls::Joint<class epic::nls::smiley:
iffDataAffine<float,3,3,void> > * const)” (??$__std_find_trivial@PEAV?$Joint@V?$DiffDataAffine@M$02$02X@nls@epic@@@nls@epic@@PEAV123@@@YAPEAPEAV?$Joint@V?$DiffDataAffine@M$02$02X@nls@epic@@@nls@epic@@PEAPEAV012@0QEAV012@@Z)
UATHelper: Packaging (Windows): RigGenerateTrainingData.cpp.obj : error LNK2019: unresolved external symbol __std_find_trivial_4 referenced in function “unsigned int const * __cdecl __std_find_trivial<unsigned int const ,unsigned int>(unsigned int const *,unsigned int const *,unsigned int)” (??$__std_find_trivial@$$CBII@@YAPEBIPEBI0I@Z)
UATHelper: Packaging (Windows): C:\Users\Jim Hudson\Documents\Unreal Projects\AArg\Binaries\Win64\AArg-Win64-Shipping.exe : fatal error LNK1120: 3 unresolved externals
UATHelper: Packaging (Windows): [20/20] WriteMetadata AArg-Win64-Shipping.target cancelled
UATHelper: Packaging (Windows): Took 9.8634817s to run dotnet.exe, ExitCode=6
UATHelper: Packaging (Windows): UnrealBuildTool failed. See log for more details. (C:\Users\Jim Hudson\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.2\UBT-AArg-Win64-Shipping_2.txt)
UATHelper: Packaging (Windows): AutomationTool executed for 0h 0m 12s
UATHelper: Packaging (Windows): AutomationTool exiting with ExitCode=6 (6)
UATHelper: Packaging (Windows): BUILD FAILED
PackagingResults: Error: Unknown Error

ANd when I look in the other log:

Projects\AArg\Binaries\Win64\AArg-Win64-Shipping.exp
FaceMeshSolve.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
FaceTracking.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
PCARigCreator.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
ImageIO.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
VertexWeights.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
solver_utils.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
string_functions.cpp.obj : error LNK2001: unresolved external symbol __std_find_trivial_2
JointRigOptimization.cpp.obj : error LNK2019: unresolved external symbol __std_find_trivial_8 referenced in function “class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * * __cdecl __std_find_trivial<class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > *,class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > *>(class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * *,class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * *,class epic::nls::Joint<class epic::nls::DiffDataAffine<float,3,3,void> > * const)” (??$__std_find_trivial@PEAV?$Joint@V?$DiffDataAffine@M$02$02X@nls@epic@@@nls@epic@@PEAV123@@@YAPEAPEAV?$Joint@V?$DiffDataAffine@M$02$02X@nls@epic@@@nls@epic@@PEAPEAV012@0QEAV012@@Z)
RigGenerateTrainingData.cpp.obj : error LNK2019: unresolved external symbol __std_find_trivial_4 referenced in function “unsigned int const * __cdecl __std_find_trivial<unsigned int const ,unsigned int>(unsigned int const *,unsigned int const *,unsigned int)” (??$__std_find_trivial@$$CBII@@YAPEBIPEBI0I@Z)
C:\Users\Jim Hudson\Documents\Unreal Projects\AArg\Binaries\Win64\AArg-Win64-Shipping.exe : fatal error LNK1120: 3 unresolved externals
[20/20] WriteMetadata AArg-Win64-Shipping.target cancelled
CompilationResultException: Error: OtherCompilationError

WTF is std_find_trivial_2?

Solved this myself by removing plugins, it ended up being metahumans or the MH AI plugin.

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