Description

Update (5/4/15):
New repro steps using Main (//depot/UE4/Promotable-CL-2535351):

1. Create a new Blueprint project
2. Create 3 new Levels: MainMenu, Lobby, and Level
3. Create 3 new GameModes: MainMenu_GM, Lobby_GM, and Level_GM
4. Create 3 new PlayerControllers: MainMenu_PC, Lobby_PC, and Level_PC
5. Override the GameMode for each level to their own GameModes
6. Set each GameMode to use the appropriate PlayerController
7. In MainMenu_PC, add an input and attach an OpenLevel node: "Lobby?listen"
8. In Lobby_PC, add an input and attach an ExecuteConsoleCommand node: "ServerTravel Level"
9. In Level_PC, add an input and attach an OpenLevel node: "MainMenu"
10. In Lobby_GM, enable Use Seamless Travel
11. Open MainMenu map
12. PIE
13. Use the input keys to move from MainMenu to Lobby to Level
14. Use the input key to move from Level back to MainMenu
15. Crash

The Crash Reporter site is currently not updating to capture this report, but this is from the Crash Reporter dialogue:

MachineId:11C1409345235B4C8A7456BDAD2C5DD2
EpicAccountId:17a41544bda1400782825ef69fac2af9

Unknown exception - code 00000001 (first/second chance not available)

Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Editor\UnrealEd\Private\Editor.cpp] [Line: 6991] 
World //Game//Maps//Level.Level not cleaned up by garbage collection!
   World //Game//Maps//Level.Level [target] (s

KERNELBASE + 37901 bytes
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() + 292 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FMsg::Logf__VA() + 463 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:531]
UE4Editor_UnrealEd!UEditorEngine::VerifyLoadMapWorldCleanup() + 1087 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editor.cpp:6991]
UE4Editor_Engine!UEngine::LoadMap() + 4171 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\unrealengine.cpp:8756]
UE4Editor_Engine!UEngine::Browse() + 1442 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\unrealengine.cpp:8144]
UE4Editor_Engine!UEngine::TickWorldTravel() + 813 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\unrealengine.cpp:8311]
UE4Editor_UnrealEd!UEditorEngine::Tick() + 3829 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editor.cpp:1267]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() + 22 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealedengine.cpp:347]
UE4Editor!FEngineLoop::Tick() + 4179 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:2257]
UE4Editor!GuardedMain() + 1404 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

==================================================

UPDATE:
 
BRANCH: //depot/UE4/Promoted-CL-2306964 and 4.5.0-2308363+++depot+UE4-Releases+4.5
CHANGELIST: 2297954
BUILD TYPE: P4
PLATFORM: Windows  
 
REPRO STEPS:
1. Open ue4editor.exe shootergame
2.Adjust Play settings to 4 players with a single process, make sure dedicated server is unchecked
3. Play in viewport
4. On host, open command console and enter servertravel sanctuary
 
===============================================================================
 
 
BRANCH: //depot/UE4/Promotable-CL-2297954
CHANGELIST: 2297954
BUILD TYPE: P4
PLATFORM: Windows  
 
DESCRIPTION:
Client crashes when using ServerTravel command
 
CRASHREPORTER:
[Link Removed]
 
REGRESSION: YES
BROKEN: 2297954
WORKED: 2231657
 
FREQUENCY: 3/3
====================================
 
REPRO STEPS:
1. Open ue4editor.exe shootergame -game
2. Load into Sanctuary
3. Enter command ServerTravel Highrise
 
 
CALLSTACK:

Unknown exception - code 00000001 (first/second chance not available)
 
Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4\Engine\Source\Editor\UnrealEd\Private\Editor.cpp] [Line: 6849] 
World //Temp//Untitled_7.NewWorld not cleaned up by garbage collection!
  World //Temp//Untitled_7.NewWorld [target] (root)
  
 
KERNELBASE + 37901 bytes
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() + 268 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FMsg::Logf__VA() + 463 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\core\private\misc\outputdevice.cpp:522]
UE4Editor_UnrealEd!UEditorEngine::VerifyLoadMapWorldCleanup() + 1080 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\unrealed\private\editor.cpp:6849]
UE4Editor_Engine!FSeamlessTravelHandler::Tick() + 3892 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\engine\private\world.cpp:4490]
UE4Editor_Engine!UEngine::TickWorldTravel() + 65 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\engine\private\unrealengine.cpp:7986]
UE4Editor_UnrealEd!UEditorEngine::Tick() + 3499 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\unrealed\private\editor.cpp:1161]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() + 31 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\unrealed\private\unrealedengine.cpp:252]
UE4Editor!FEngineLoop::Tick() + 3294 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\launch\private\launchengineloop.cpp:2112]
UE4Editor!GuardedMain() + 476 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\launch\private\windows\launchwindows.cpp:201]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

 
 
ATTACHMENTS:
Logs
 
ENVIROMENT:
Operating System: Windows 7 Professional 64-bit
Processor: Intel(R) Xeon(R) CPU E5-1607 v2 @ 3.00GHz (4 CPUs)
Ram: 32.0 GB
Graphics: NVIDIA GeForce GTX 770
Graphics Driver: 337.88

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Fixed
ComponentNetworking
Affects Versions4.7.64.9
Target Fix4.9
CreatedSep 17, 2014
ResolvedMay 19, 2015
UpdatedApr 27, 2018