Unreal Engine Issues and Bug Tracker (UE-64999)

Description

Editor crashes when attempting to play a recorded demo - Assertion failed: IsGameWorld() && GetCurrentLevel()

This issue occurs when using a template project or QAGame. This does not occur when using ShooterGame.

Seen in Release-4.21.

Steps to Reproduce

Open QAGame
PIE
Enter demorec QAGameDemo into the console
Wait 10s
Enter demostop into the console
Enter demoplay QAGameDemo into the console

Result: The project crashes.

Callstack

[2018.10.09-18.46.12:739][607]LogWindows: Error: === Critical error: ===
[2018.10.09-18.46.12:739][607]LogWindows: Error: 
[2018.10.09-18.46.12:739][607]LogWindows: Error: Assertion failed: IsGameWorld() && GetCurrentLevel() [File:D:\P4Workspaces\Release\Engine\Source\Runtime\Engine\Private\World.cpp] [Line: 5149] 
[2018.10.09-18.46.12:739][607]LogWindows: Error: 
[2018.10.09-18.46.12:739][607]LogWindows: Error: 
[2018.10.09-18.46.12:739][607]LogWindows: Error: 
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffec452a388 KERNELBASE.dll!UnknownFunction []
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe6e901cfa UE4Editor-Core.dll!FWindowsErrorOutputDevice::Serialize() [d:\p4workspaces\release\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:63]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe6e6fafd7 UE4Editor-Core.dll!FOutputDevice::LogfImpl() [d:\p4workspaces\release\engine\source\runtime\core\private\misc\outputdevice.cpp:70]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe6e6312f5 UE4Editor-Core.dll!FDebug::AssertFailed() [d:\p4workspaces\release\engine\source\runtime\core\private\misc\assertionmacros.cpp:422]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe61051eee UE4Editor-Engine.dll!UWorld::GetMatineeActors() [d:\p4workspaces\release\engine\source\runtime\engine\private\world.cpp:5151]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe60ac0a65 UE4Editor-Engine.dll!APlayerController::InitInputSystem() [d:\p4workspaces\release\engine\source\runtime\engine\private\playercontroller.cpp:659]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe60ad7edf UE4Editor-Engine.dll!APlayerController::SetPlayer() [d:\p4workspaces\release\engine\source\runtime\engine\private\playercontroller.cpp:4309]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe608234c5 UE4Editor-Engine.dll!UNetConnection::HandleClientPlayer() [d:\p4workspaces\release\engine\source\runtime\engine\private\netconnection.cpp:2443]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe603235ad UE4Editor-Engine.dll!UDemoNetConnection::HandleClientPlayer() [d:\p4workspaces\release\engine\source\runtime\engine\private\demonetdriver.cpp:4766]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe60ac6bd5 UE4Editor-Engine.dll!APlayerController::OnActorChannelOpen() [d:\p4workspaces\release\engine\source\runtime\engine\private\playercontroller.cpp:1283]
[2018.10.09-18.46.12:739][607]LogWindows: Error: [Callstack] 0x00007ffe6029ec33 UE4Editor-Engine.dll!UActorChannel::NotifyActorChannelOpen() [d:\p4workspaces\release\engine\source\runtime\engine\private\datachannel.cpp:2070]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe602a2dbe UE4Editor-Engine.dll!UActorChannel::ProcessBunch() [d:\p4workspaces\release\engine\source\runtime\engine\private\datachannel.cpp:2412]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe602b22eb UE4Editor-Engine.dll!UActorChannel::ReceivedBunch() [d:\p4workspaces\release\engine\source\runtime\engine\private\datachannel.cpp:2347]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe602b753c UE4Editor-Engine.dll!UChannel::ReceivedSequencedBunch() [d:\p4workspaces\release\engine\source\runtime\engine\private\datachannel.cpp:323]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe602b5949 UE4Editor-Engine.dll!UChannel::ReceivedNextBunch() [d:\p4workspaces\release\engine\source\runtime\engine\private\datachannel.cpp:730]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe602b7177 UE4Editor-Engine.dll!UChannel::ReceivedRawBunch() [d:\p4workspaces\release\engine\source\runtime\engine\private\datachannel.cpp:415]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe6083c2b9 UE4Editor-Engine.dll!UNetConnection::ReceivedPacket() [d:\p4workspaces\release\engine\source\runtime\engine\private\netconnection.cpp:1731]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe6083d4c7 UE4Editor-Engine.dll!UNetConnection::ReceivedRawPacket() [d:\p4workspaces\release\engine\source\runtime\engine\private\netconnection.cpp:1017]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe6033e2fa UE4Editor-Engine.dll!UDemoNetDriver::ProcessPacket() [d:\p4workspaces\release\engine\source\runtime\engine\private\demonetdriver.cpp:2980]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe5fce8db8 UE4Editor-Engine.dll!UDemoNetDriver::ProcessPacket() [d:\p4workspaces\release\engine\source\runtime\engine\classes\engine\demonetdriver.h:583]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe60304589 UE4Editor-Engine.dll!UDemoNetDriver::ConditionallyProcessPlaybackPackets() [d:\p4workspaces\release\engine\source\runtime\engine\private\demonetdriver.cpp:2955]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe6035cf90 UE4Editor-Engine.dll!UDemoNetDriver::TickDemoPlayback() [d:\p4workspaces\release\engine\source\runtime\engine\private\demonetdriver.cpp:3300]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe6035fa8c UE4Editor-Engine.dll!UDemoNetDriver::TickDispatch() [d:\p4workspaces\release\engine\source\runtime\engine\private\demonetdriver.cpp:1421]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe6080e29f UE4Editor-Engine.dll!TBaseUObjectMethodDelegateInstance<0,UNetDriver,void __cdecl(float)>::ExecuteIfSafe() [d:\p4workspaces\release\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:679]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe5fbf0281 UE4Editor-Engine.dll!TBaseMulticastDelegate<void,float>::Broadcast() [d:\p4workspaces\release\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:974]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe60672758 UE4Editor-Engine.dll!UWorld::Tick() [d:\p4workspaces\release\engine\source\runtime\engine\private\leveltick.cpp:1349]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe5e7ad48f UE4Editor-UnrealEd.dll!UEditorEngine::Tick() [d:\p4workspaces\release\engine\source\editor\unrealed\private\editorengine.cpp:1714]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffe5f08d286 UE4Editor-UnrealEd.dll!UUnrealEdEngine::Tick() [d:\p4workspaces\release\engine\source\editor\unrealed\private\unrealedengine.cpp:403]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ff7710861e5 UE4Editor.exe!FEngineLoop::Tick() [d:\p4workspaces\release\engine\source\runtime\launch\private\launchengineloop.cpp:3694]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ff771096ca0 UE4Editor.exe!GuardedMain() [d:\p4workspaces\release\engine\source\runtime\launch\private\launch.cpp:174]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ff771096d1a UE4Editor.exe!GuardedMainWrapper() [d:\p4workspaces\release\engine\source\runtime\launch\private\windows\launchwindows.cpp:145]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ff7710a46e5 UE4Editor.exe!WinMain() [d:\p4workspaces\release\engine\source\runtime\launch\private\windows\launchwindows.cpp:276]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ff7710a6107 UE4Editor.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffec5253034 KERNEL32.DLL!UnknownFunction []
[2018.10.09-18.46.12:740][607]LogWindows: Error: [Callstack] 0x00007ffec7801431 ntdll.dll!UnknownFunction []
[2018.10.09-18.46.12:740][607]LogWindows: Error:

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Fixed

Component	UE - Networking
Affects Versions	4.21
Target Fix	4.21

Fix Commit	4448407
Main Commit	4450599
Release Commit	4448407

Created	Oct 9, 2018
Resolved	Oct 10, 2018
Updated	Oct 6, 2020

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