# UnrealEditor-CoreUObject.dll!UnknownFunction --\> Error when packaging **URL:** \ **Category:** Programming & Scripting\ **Tags:** unreal-engine, question, Blueprint\ **Created:** [February 9, 2024, 8:09pm UTC](https://forums.unrealengine.com/t/unrealeditor-coreuobject-dll-unknownfunction-error-when-packaging/1677072 "2024-02-09T20:09:11Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Chapkaaaaa](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Chapkaaaaa](https://forums.unrealengine.com/u/Chapkaaaaa)\ **Post date:** [February 9, 2024, 8:09pm UTC](https://forums.unrealengine.com/t/unrealeditor-coreuobject-dll-unknownfunction-error-when-packaging/1677072/1 "2024-02-09T20:09:11Z")
Hi, I’m kinda new to UE5, when working on a project i added AI, when i tried packaging it failed with this message : ```auto UATHelper: Packaging (Windows): LogOutputDevice: Error: begin: stack for UAT UATHelper: Packaging (Windows): LogOutputDevice: Error: === Handled ensure: === UATHelper: Packaging (Windows): LogOutputDevice: Error: UATHelper: Packaging (Windows): LogOutputDevice: Error: Ensure condition failed: !UberGraphFramePointerProperty == !UberGraphFunction [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 1667] UATHelper: Packaging (Windows): LogOutputDevice: Error: UATHelper: Packaging (Windows): LogOutputDevice: Error: Stack: UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffcf4a73a60 UnrealEditor-Engine.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f73eb3 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f7385e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f3f9cd UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06bbd41c UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06bdd163 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: begin: stack for UAT PackagingResults: Error: === Handled ensure: === PackagingResults: Error: Ensure condition failed: !UberGraphFramePointerProperty == !UberGraphFunction [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 1667] PackagingResults: Error: Stack: PackagingResults: Error: [Callstack] 0x00007ffcf4a73a60 UnrealEditor-Engine.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f73eb3 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f7385e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f3f9cd UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06bbd41c UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06bdd163 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d187f8 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a974e9 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a9798a UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d46915 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d3f672 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d174a0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6b918 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6beb6 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f923ad UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f918e0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e11449 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e25ce1 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e20563 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e7d23d UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e1f3cf UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd033c6c83 UnrealEditor-UnrealEd.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d187f8 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd03b5f47e UnrealEditor-UnrealEd.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffcf6707f6e UnrealEditor-Engine.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffcf44a78db UnrealEditor-Engine.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d46468 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffcf66f1f8e UnrealEditor-Engine.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e85471 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06e9693a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06c0e4c8 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06bff2ec UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06bfe03a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a974e9 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a9798a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d46915 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d3f672 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d174a0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6b918 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6beb6 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f923ad UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f918e0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e11449 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e25ce1 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e20563 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e7d23d UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e1f3cf UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd033c6c83 UnrealEditor-UnrealEd.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd03b5f47e UnrealEditor-UnrealEd.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffcf6707f6e UnrealEditor-Engine.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffcf44a78db UnrealEditor-Engine.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d46468 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffcf66f1f8e UnrealEditor-Engine.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e85471 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06e9693a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06c0e4c8 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06bff2ec UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06bfe03a UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffcf4ac6f07 UnrealEditor-Engine.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d46468 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a97634 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a9708b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a6be34 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d46920 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d3f672 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d16a1d UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a97634 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d46915 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d3f672 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d174a0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffcf4ac6f07 UnrealEditor-Engine.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d46468 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a97634 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a9708b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a6be34 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d46920 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d3f672 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d16a1d UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a97634 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d46915 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d3f672 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d174a0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1935b UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d4048e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06f6d3f5 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d0b22e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7218b UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06a97634 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d46915 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d7228e UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d6ffd0 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d1a38a UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a9999f UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06a97634 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d46915 UnrealEditor-CoreUObject.dll!UnknownFunction [] PackagingResults: Error: [Callstack] 0x00007ffd06d18dc5 UnrealEditor-CoreUObject.dll!UnknownFunction [] UATHelper: Packaging (Windows): LogOutputDevice: Error: end: stack for UAT PackagingResults: Error: end: stack for UAT ``` Before that I was packaging just fine, do you have an idea ? I have looked up other post but could not find the issue… ---
**Author:** ![imagineer](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/imagineer/32/562003_2.png) [@imagineer](https://forums.unrealengine.com/u/imagineer)\ **Post date:** [April 29, 2024, 6:38pm UTC](https://forums.unrealengine.com/t/unrealeditor-coreuobject-dll-unknownfunction-error-when-packaging/1677072/2 "2024-04-29T18:38:35Z")
> [@how should I fix this packaging error?](https://forums.unrealengine.com/t/how-should-i-fix-this-packaging-error/1189670): > > hey everyone. please help me to fix this error. I got this kind of error repeating in my Output log when I tried to package my game in ue5.1 and I don’t even know where to look for the problem! PackagingResults: Error: begin: stack for UAT PackagingResults: Error: === Handled ensure: === PackagingResults: Error: Ensure condition failed: ClassDefaultObject [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 1635] PackagingResults: Error: Stack: … ---
**Author:** ![imagineer](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/imagineer/32/562003_2.png) [@imagineer](https://forums.unrealengine.com/u/imagineer)\ **Post date:** [April 29, 2024, 6:40pm UTC](https://forums.unrealengine.com/t/unrealeditor-coreuobject-dll-unknownfunction-error-when-packaging/1677072/3 "2024-04-29T18:40:41Z")
> [@Getting editor symbols for debugging](https://forums.unrealengine.com/t/getting-editor-symbols-for-debugging/61297/10): > > Thanks Ryan20fun, was looking for the symbols as I have EU4 crashing when I try to open a file wink