Package error System.NullReferenceException

Hi!

I’ve created new project with Unreal Engine 4 with one map. The map contains only simple HUD (but without it also crash). And when I’ve tried to package my project I got a error, like belowe:

UATHelper: Packaging (Windows (64-bit)): Running: C:\Program Files\Epic Games\UE_4.21\Engine\Binaries\DotNET\UnrealBuildTool.exe DrLivingstone Win64 Development -Project="C:\Users\Kamil\Documents\Unreal Projects\DrLivingstone\DrLivingstone.uproject"  "C:\Users\Kamil\Documents\Unreal Projects\DrLivingstone\DrLivingstone.uproject" -NoUBTMakefiles  -remoteini="
C:\Users\Kamil\Documents\Unreal Projects\DrLivingstone" -skipdeploy -Manifest="C:\Users\Kamil\Documents\Unreal Projects\DrLivingstone\Intermediate\Build\Manifest.xml" -NoHotReload -log="C:\Users\Kamil\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.21\UBT-DrLivingstone-Win64-Development.txt"
UATHelper: Packaging (Windows (64-bit)):   Using Visual Studio 2017 14.16.27023 toolchain (C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023) and Windows 10.0.17763.0 SDK (C:\Program Files (x86)\Windows Kits\10).
UATHelper: Packaging (Windows (64-bit)):   ERROR: System.NullReferenceException: Odwołanie do obiektu nie zostało ustawione na wystąpienie obiektu.
UATHelper: Packaging (Windows (64-bit)):             w UnrealBuildTool.UEBuildBinary.<>c.<SetupBinaryLinkEnvironment>b__37_1(FileItem Item) w D:\Build\++UE4\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildBinary.cs:wiersz 752
UATHelper: Packaging (Windows (64-bit)):             w System.Linq.Enumerable.WhereSelectListIterator`2.MoveNext()
UATHelper: Packaging (Windows (64-bit)):             w System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
UATHelper: Packaging (Windows (64-bit)):             w UnrealBuildTool.UEBuildBinary.SetupBinaryLinkEnvironment(ReadOnlyTargetRules Target, UEToolChain ToolChain, LinkEnvironment LinkEnvironment, CppCompileEnvironment CompileEnvironment, List`1 SharedPCHs, ISourceFileWorkingSet WorkingSet, DirectoryReference ExeDir, ActionGraph ActionGraph) w D:\Build\++UE4\
Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildBinary.cs:wiersz 752
UATHelper: Packaging (Windows (64-bit)):             w UnrealBuildTool.UEBuildBinary.Build(ReadOnlyTargetRules Target, UEToolChain ToolChain, CppCompileEnvironment CompileEnvironment, LinkEnvironment LinkEnvironment, List`1 SharedPCHs, ISourceFileWorkingSet WorkingSet, DirectoryReference ExeDir, ActionGraph ActionGraph) w D:\Build\++UE4\Sync\Engine\Saved\CsT
ools\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildBinary.cs:wiersz 193
UATHelper: Packaging (Windows (64-bit)):             w UnrealBuildTool.UEBuildTarget.Build(BuildConfiguration BuildConfiguration, CPPHeaders Headers, List`1 OutputItems, List`1 UObjectModules, ISourceFileWorkingSet WorkingSet, ActionGraph ActionGraph, EHotReload HotReload, Boolean bIsAssemblingBuild) w D:\Build\++UE4\Sync\Engine\Saved\CsTools\Engine\Source\P
rograms\UnrealBuildTool\Configuration\UEBuildTarget.cs:wiersz 2173
UATHelper: Packaging (Windows (64-bit)):             w UnrealBuildTool.UnrealBuildTool.RunUBT(BuildConfiguration BuildConfiguration, String[] Arguments, FileReference ProjectFile, Boolean bCatchExceptions) w D:\Build\++UE4\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:wiersz 1503
UATHelper: Packaging (Windows (64-bit)):          (see C:\Users\Kamil\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.21\UBT-DrLivingstone-Win64-Development.txt for full exception trace)
PackagingResults: Error: System.NullReferenceException: Odwołanie do obiektu nie zostało ustawione na wystąpienie obiektu.
UATHelper: Packaging (Windows (64-bit)): Took 3,400763s to run UnrealBuildTool.exe, ExitCode=5
UATHelper: Packaging (Windows (64-bit)): ERROR: UnrealBuildTool failed. See log for more details. (C:\Users\Kamil\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.21\UBT-DrLivingstone-Win64-Development.txt)
UATHelper: Packaging (Windows (64-bit)):        (see C:\Users\Kamil\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.21\Log.txt for full exception trace)
PackagingResults: Error: UnrealBuildTool failed. See log for more details. (C:\Users\Kamil\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.21\UBT-DrLivingstone-Win64-Development.txt)

Also, I attach a full log file. Honestly, I don’t have an idea what is wrong. I found few topics with similar problems (such as: Packaging error, Object reference not set to an instance of an object? - Platform & Builds - Unreal Engine Forums or UnrealBuildTool Compilation Error? - C++ - Unreal Engine Forums or Unable to Release : System.NullReferenceException - Programming & Scripting - Unreal Engine Forums) but I’ve disabled almost all plugins :frowning:

link text

Ah :frowning: After updating into 4.21.2 the problem disappears :open_mouth: It can be closed.