Developer Notes

Issue was some code that only executed in editor that needed to always execute. In particular:

UVBs::UVBs(const FObjectInitializer& ObjectInitializer):Super(ObjectInitializer){
LoadConfig();
UE_LOG(IVS, Display, TEXT("LoadConfig %s"), *NameFile);
#if WITH_EDITORONLY_DATA
if(UVLbr::Loaded() 
//&& IsAsset()
// && NameFile.IsEmpty()
){NameSet(); PreConstruct();}
#else
if(UVLbr::Loaded() && NameFile.IsEmpty()){ // Modified, was 'NameFile.IsEmpty()' before
NameSet();
PreConstruct();
}
#endif
}
Description

Crash occurs when attempting to call native Pre-Construct in the attached project.

Steps to Reproduce
  1. Download and extract the attached project.
  2. Open the project in editor.
  3. Launch the project onto Windows.

RESULT

Project crashes.

Callstack
ACCESS_VIOLATION 0x00000000

UnknownFunction []
C-Win64-DebugGame.exe!UFunction::Invoke() []
C-Win64-DebugGame.exe!UObject::ProcessEvent() []
C-Win64-DebugGame.exe!UVBs::PreConstruct() [D:\NeoFur 4.24\C\Plugins\IVS\Intermediate\Build\Win64\UE4\Inc\IVS\VBs.gen.cpp:112]
C-Win64-DebugGame.exe!UVBs::UVBs() [D:\NeoFur 4.24\C\Plugins\IVS\Source\IVS\Private\VBs.cpp:19]
C-Win64-DebugGame.exe!UVStrs::UVStrs() [D:\NeoFur 4.24\C\Plugins\IVS\Source\IVS\Private\VCnt.cpp:2422]
C-Win64-DebugGame.exe!InternalConstructor<UVStrs>() [D:\UE_4.24\Engine\Source\Runtime\CoreUObject\Public\UObject\Class.h:3165]
C-Win64-DebugGame.exe!UClass::CreateDefaultObject() []
C-Win64-DebugGame.exe!UClass::Serialize() []
C-Win64-DebugGame.exe!UBlueprintGeneratedClass::Serialize() []
C-Win64-DebugGame.exe!FAsyncPackage::EventDrivenSerializeExport() []
C-Win64-DebugGame.exe!FAsyncPackage::ProcessImportsAndExports_Event() []
C-Win64-DebugGame.exe!<lambda_e32cbe457cdc707215184650c9a2ec42>::operator()() []
C-Win64-DebugGame.exe!FAsyncLoadingThread::ProcessAsyncLoading() []
C-Win64-DebugGame.exe!FAsyncLoadingThread::TickAsyncThread() []
C-Win64-DebugGame.exe!FAsyncLoadingThread::TickAsyncLoading() []
C-Win64-DebugGame.exe!FAsyncLoadingThread::FlushLoading() []
C-Win64-DebugGame.exe!LoadPackageInternal() []
C-Win64-DebugGame.exe!LoadPackage() []
C-Win64-DebugGame.exe!UEngine::LoadMap() []
C-Win64-DebugGame.exe!UEngine::Browse() []
C-Win64-DebugGame.exe!UGameInstance::StartGameInstance() []
C-Win64-DebugGame.exe!FEngineLoop::Init() []
C-Win64-DebugGame.exe!GuardedMain() []
C-Win64-DebugGame.exe!GuardedMainWrapper() []
C-Win64-DebugGame.exe!WinMain() []
C-Win64-DebugGame.exe!__scrt_common_main_seh() [d:\agent\_work\4\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
KERNEL32.DLL!UnknownFunction []
ntdll.dll!UnknownFunction []

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Non-Issue
ComponentTools
Affects Versions4.244.25
Target Fix4.27
CreatedApr 27, 2020
ResolvedFeb 2, 2021
UpdatedFeb 5, 2021
View Jira Issue