UE 5.3 crashes after upgrading

jappie_k
Tue, 10 Oct 2023 15:15:02 +0000
Blueprint

When upgrading my project I can’t open some of the blueprints including my BP_ThirdPersonCharacter and Basegamestate.

Please help me I’ve been stuck on this for days.

The error code I got:

Assertion failed: FixupChunk.Header.NumHierachyFixups <= ( 1 << 8) [File:D:\build++UE5\Sync\Engine\Source\Developer\NaniteBuilder\Private\NaniteEncode.cpp] [Line: 2289]

UnrealEditor_NaniteBuilder
UnrealEditor_NaniteBuilder
UnrealEditor_GeometryCollectionEngine
UnrealEditor_GeometryCollectionEngine
UnrealEditor_GeometryCollectionEngine
UnrealEditor_DerivedDataCache
UnrealEditor_DerivedDataCache
UnrealEditor_DerivedDataCache
UnrealEditor_DerivedDataCache
UnrealEditor_GeometryCollectionEngine
UnrealEditor_GeometryCollectionEngine
UnrealEditor_GeometryCollectionEngine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowserAssetDataSource
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_ContentBrowser
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll

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