Error during cooking. To the rescue. "Custom Property List Not Initialized"

Development Programming & Scripting
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I recently updated to UE 5.6 on Windows and i’m getting this while test cooking my project. I have no clue and can’t find help so far. Thanks in advance. Error doesn’t happen in 5.5

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: begin: stack for UAT

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: === Handled ensure: ===

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error:

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: Ensure condition failed: bCustomPropertyListForPostConstructionInitialized [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 1242]

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: Custom Property List Not Initialized for /Game/DamageSystem/BPC_DamageSystem.BPC_DamageSystem_C

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: Stack:

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe59151434 UnrealEditor-Engine.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe56abe164 UnrealEditor-Engine.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe61489f3f UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe61492536 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe61466cf9 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe614a809e UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611aa46e UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611ac01f UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60ec2b23 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60e9d105 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611e1b85 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611aa935 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60ec53f1 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60ec3246 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60ec2c8f UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611e1b76 UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60ea139d UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60e959dc UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611a921e UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611aae4b UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60eb789d UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60e9d2cd UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe60e9d0fd UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611d7f9b UnrealEditor-CoreUObject.dll!UnknownFunction []

UATHelper: Cooking (Windows): LogInit: Display: LogOutputDevice: Error: [Callstack] 0x00007ffe611a88bd UnrealEditor-CoreUObject.dll!UnknownFunction []

2

Hello there @943023!

Considering that 5.6 has just been released, it is prone to have unexpected issues. Still, we can try a few steps for resolution here:

  1. Since the error is tied to BPC_DamageSystem, test by re-compiling it, and check the output log for warnings

  2. Perform a redirector fix from Content root

  3. Clear cache for any old elements present from 5.5, via deleting folders Saved, Intermediate, and DerivedDataCache, then attempt to cook again

1 Like
3

1 and 2 makes no difference.
3 and i get “The LiveLinkHub.target file does not exist. Would you like to build the editor?” message on startup. Which i have to choose no, yes just doesn’t do anything.
How to fix this new issue?

Oh and the same error still occurs during cooking.

Thanks for your time so far. @brs-sebascova

Sadly still not able to cook my project.

4

Found the solution. Just renaming BPC_DamageSystem to something else solved the issue.