Unknown Packaging Error

Development Programming & Scripting
1

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Hello, as I am trying to package my game this unknown packaging error appears during the final stages of packaging, is there any solution to this problem?

UATHelper: Packaging (Windows): LogWindows: Error: appError called: Assertion failed: LoadedWorld [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\LevelActor.cpp] [Line: 1576]
PackagingResults: Error: appError called: Assertion failed: LoadedWorld [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\LevelActor.cpp] [Line: 1576]
UATHelper: Packaging (Windows): LogWindows: Error: begin: stack for UAT
UATHelper: Packaging (Windows): LogWindows: Error: === Critical error: ===
UATHelper: Packaging (Windows): LogWindows: Error:
UATHelper: Packaging (Windows): LogWindows: Error: Assertion failed: LoadedWorld [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\LevelActor.cpp] [Line: 1576]
UATHelper: Packaging (Windows): LogWindows: Error:
UATHelper: Packaging (Windows): LogWindows: Error:
UATHelper: Packaging (Windows): LogWindows: Error:
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5eacff38 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5eac4104 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5ead6712 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: begin: stack for UAT
PackagingResults: Error: === Critical error: ===
PackagingResults: Error: Assertion failed: LoadedWorld [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\LevelActor.cpp] [Line: 1576]
PackagingResults: Error: [Callstack] 0x00007fff5eacff38 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fff5eac4104 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5eb02903 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5eb01e97 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5e7efe50 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5e7af323 UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fff5e7cdc6f UnrealEditor-UnrealEd.dll!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007ff604ec733f UnrealEditor-Cmd.exe!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007ff604ebcfb6 UnrealEditor-Cmd.exe!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007ff604ebd37a UnrealEditor-Cmd.exe!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007ff604ec0854 UnrealEditor-Cmd.exe!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007ff604ed6984 UnrealEditor-Cmd.exe!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007ff604ed8eb6 UnrealEditor-Cmd.exe!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error: [Callstack] 0x00007fffbc16257d KERNEL32.DLL!UnknownFunction
UATHelper: Packaging (Windows): LogWindows: Error:
UATHelper: Packaging (Windows): LogWindows: Error: end: stack for UAT
PackagingResults: Error: [Callstack] 0x00007fff5ead6712 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fff5eb02903 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fff5eb01e97 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fff5e7efe50 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fff5e7af323 UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fff5e7cdc6f UnrealEditor-UnrealEd.dll!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007ff604ec733f UnrealEditor-Cmd.exe!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007ff604ebcfb6 UnrealEditor-Cmd.exe!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007ff604ebd37a UnrealEditor-Cmd.exe!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007ff604ec0854 UnrealEditor-Cmd.exe!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007ff604ed6984 UnrealEditor-Cmd.exe!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007ff604ed8eb6 UnrealEditor-Cmd.exe!UnknownFunction
PackagingResults: Error: [Callstack] 0x00007fffbc16257d KERNEL32.DLL!UnknownFunction
PackagingResults: Error: end: stack for UAT

here are the logs. Any help/clue would be very appreciated.

2

Hello, this seems to be the source of the error.

What is in your level? Your own creations? Marketplace assets?

Do you create the level?

Here people have a similar issue: Error on package: Assertion failed: LoadedWorld - LevelActor.cpp - KERNELBASE.dll!UnknownFunction

3

I found out that in a level that I dont really use anymore there was an actor blueprint that had compiler errors. resolved this issue by fixing said errors but now I’m facing another error similar to Development Build error: Ensure condition failed: oldValue == newValue. ThreadingBase.cpp Line: 311 - #24 by RealAero still repackaging currently will update as soon as its done. Thanks for replying.

4

After repackaging, it still gives out the same error. I am using paragon assets mostly just like in the thread you’ve linked to is there any other way to fix this other than removing all paragon assets? Because this only happens during packaging, and not while using project launcher or playing it through the editor.

5

What version of Unreal are you on?

If you’re on 5.4, you are out of luck because they are not currently compatible with that version.