BTDecorator packaging error

Development Programming & Scripting Blueprint
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1

Getting an error when I try to package, something about a corrupt BTDectorator…

I have no idea what to do about this, any help is much appreciated.

LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: ObservedKeyNames.Num() > 0 [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/AIModule/Private/BehaviorTree/Decorators/BTDecorator_BlueprintBase.cpp] [Line: 67]
LogOutputDevice: Error: Stack:
LogOutputDevice: Error: [Callstack] 0x00007ffb26df0e78 UE4Editor-AIModule.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb26cd74a9 UE4Editor-AIModule.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb3b13d302 UE4Editor-CoreUObject.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb3b26d218 UE4Editor-CoreUObject.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb3b257897 UE4Editor-CoreUObject.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb3b27ceb3 UE4Editor-CoreUObject.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb3b27bbc0 UE4Editor-CoreUObject.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb34fc8eeb UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb34fb8b0f UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb34fa1d0f UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb35802917 UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb352d3ec9 UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb352d3cd8 UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb35843944 UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffb357fded2 UE4Editor-UnrealEd.dll!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ff63cde0e3b UE4Editor.exe!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ff63cde10ba UE4Editor.exe!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ff63cde40dd UE4Editor.exe!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ff63cdf5984 UE4Editor.exe!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ff63cdf853a UE4Editor.exe!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffba0e574b4 KERNEL32.DLL!UnknownFunction
LogOutputDevice: Error: [Callstack] 0x00007ffba23e26a1 ntdll.dll!UnknownFunction [

Version 4.27.2

1 Like
2

Hi Did you find fix for it ?

3

Yes I don’t remember exactly how, but I think there was a null value being returned or something inside one of my custom Blueprint Decorators. Fixed the Decorator and it was fine.

4

Thank you soo much for your response and time. Can you clarify more further if you have time. Was it a blackboard value which was null or custom value in particular decorator ?
But until you reply I am trying to look into it. Will post if get it fixed.
Thanks.

5

I think the decorator needed at least one public blackboard key. I added a dummy one and it worked.