Unreal Engine Issues and Bug Tracker (UE-36378)

Description

Standalone window in editor will hit assert in a bit of time. Issue doesn't happen is playing standalone via Visual Studio.

Steps to Reproduce

Download project at [Link Removed]
Extract project folder and open .uproject
From Play, in the editor, choose Standalone
Hold left-click to fire and hold it down for a while

RESULT:

Assert will be hit from 1 to 5 minutes.

Callstack

MachineId:E718AAAF44F5F6DA613C599B98168A86
EpicAccountId:a9a0b99ddf7941d78f8878a89379da48

Assertion failed: Index >= 0 [File:d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\public\uobject\UObjectArray.h] [Line: 402] 



UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:421]
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2117]
UE4Editor_CoreUObject!UObject::execLet() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1925]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:922]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:821]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:922]
UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:821]
UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:922]
UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4280]
UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1305]
UE4Editor_Engine!AActor::ProcessEvent() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\actor.cpp:646]
UE4Editor_Engine!AActor::ReceiveTick() [d:\build\++ue4+release-4.13+compile\sync\engine\intermediate\build\win64\ue4editor\inc\engine\engine.generated.1.cpp:2816]
UE4Editor_Engine!AActor::Tick() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\actor.cpp:844]
UE4Editor_Engine!AActor::TickActor() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\actor.cpp:831]
UE4Editor_Engine!FActorTickFunction::ExecuteTick() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\actor.cpp:112]
UE4Editor_Engine!FTickFunctionTask::DoTask() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:251]
UE4Editor_Engine!TGraphTask<FTickFunctionTask>::ExecuteTask() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:868]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:932]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:679]
UE4Editor_Core!FTaskGraphImplementation::WaitUntilTasksComplete() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:1776]
UE4Editor_Engine!FTickTaskSequencer::ReleaseTickGroup() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:520]
UE4Editor_Engine!FTickTaskManager::RunTickGroup() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\ticktaskmanager.cpp:1426]
UE4Editor_Engine!UWorld::RunTickGroup() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\leveltick.cpp:706]
UE4Editor_Engine!UWorld::Tick() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\leveltick.cpp:1275]
UE4Editor_Engine!UGameEngine::Tick() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\engine\private\gameengine.cpp:1057]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2834]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\launch\private\launch.cpp:156]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build\++ue4+release-4.13+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

Have Comments or More Details?

Head over to the existing Questions & Answers thread and let us know what's up.

0	Login to Vote

Cannot Reproduce

Component	UE - Gameplay - Blueprint
Affects Versions	4.13

Created	Sep 23, 2016
Resolved	Apr 12, 2017
Updated	Apr 12, 2017

View Jira Issue

UE-36378

Standalone window played from editor hits assert Index >= 0 in UObjectArray

Standalone window played from editor hits assert Index >= 0 in UObjectArray

Have Comments or More Details?