Unreal Engine 5.3 Crashed After Created A Keyframe Animation

[cgace]

Hello, we had this weird things with Unreal. We animated object with keyframing using graph editor. The object itself exported as FBX from Blender.
Everything going well after we animated the object, and rendered it out. But things going down after we close the software, and open it again, the
software crashed. We did several test and it going the same way.

[cgace]

LoginId:9f9d19414d71d1a72f8906862372b2fd
EpicAccountId:cbc7cff48001456988c67ce085114eed

Assertion failed: ReaderPos + Num <= ReaderSize [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Serialization\BufferReader.h] [Line: 52]

KERNELBASE
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_MeshDescription
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_MeshDescription
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_MeshBuilder
UnrealEditor_MeshBuilder
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Core
UnrealEditor_Engine
UnrealEditor
UnrealEditor
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

[PixelPunk13]

I have the same problem, but after the creating the new submeshes from an existing mesh…
i just deleting the files that i created before and then, level is loading. But this doesn’t quite solve the problem…

[cgace]

i dont actually know whats the problem exactly, but i come up with solution that convert all the object/model that i have been import to UE static mesh. select object > actor > convert to static mesh. this work for me just yet.