PackagingResults: Error: Unknown Error

Development Programming & Scripting
1

Trying to package for Windows in UE5.0, I gett this “Unknown error”, further up in the logs it says

UATHelper: Packaging (Windows): UnrealBuildTool failed. See log for more details. (C:\Users\rubm\AppData\Roaming\Unreal Engine\AutomationTool\Logs\F+ue+UE_5.0\UBT-MurderInSpace-Win64-Development.txt)

and therein I find

[37/39] Compile MyGameState.cpp
CompilationResultException: Error: OtherCompilationError
   at UnrealBuildTool.ActionGraph.ExecuteActions(BuildConfiguration BuildConfiguration, List`1 ActionsToExecute, List`1 TargetDescriptors) in d:\build\++UE5\Sync\Engine\Source\Programs\UnrealBuildTool\System\ActionGraph.cs:line 375
   at UnrealBuildTool.BuildMode.Build(TargetMakefile[] Makefiles, List`1 TargetDescriptors, BuildConfiguration BuildConfiguration, BuildOptions Options, FileReference WriteOutdatedActionsFile) in d:\build\++UE5\Sync\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 611
   at UnrealBuildTool.BuildMode.Build(List`1 TargetDescriptors, BuildConfiguration BuildConfiguration, ISourceFileWorkingSet WorkingSet, BuildOptions Options, FileReference WriteOutdatedActionsFile, Boolean bSkipPreBuildTargets) in d:\build\++UE5\Sync\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 282
   at UnrealBuildTool.BuildMode.Execute(CommandLineArguments Arguments) in d:\build\++UE5\Sync\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 237
   at UnrealBuildTool.UnrealBuildTool.Main(String[] ArgumentsArray) in d:\build\++UE5\Sync\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 612

Now, this isn’t meaningful to me. Especially weird: I don’t have a drive "d:". I used work on D:, but not anymore. And I never had a folder “d:\build”.

2

turns out, further up the log there were more error messages - only that they didn’t appear in read. I have to actually wrap editor-only code in these pragmas

#if WITH_EDITOR
virtual void PostEditChangeChainProperty(FPropertyChangedChainEvent& PropertyChangedEvent) override;
#endif