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Cant open project file, keeps crashing, this is the crash report. ps. other projects open normally

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Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 707] Array index out of bounds: 2 from an array of size 2

UnrealEditor_HairStrandsCore
UnrealEditor_HairStrandsCore
UnrealEditor_HairStrandsCore
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

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im having the same issue but for a different reason

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 707] Array index out of bounds: 5311931 from an array of size 82541

UnrealEditor_AssetRegistry
UnrealEditor_Core
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_AssetRegistry
UnrealEditor_AssetRegistry
UnrealEditor_AssetRegistry
UnrealEditor_AssetRegistry
UnrealEditor_AssetRegistry
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

I solved my problem by deleting the meta human hair files, and then it opened normally , then re-imported them by re-importing the whole meta human, the problem didn’t occur again, im sorry i don’t have an idea about yours.

1 Like