This is a common and longstanding crash that has occurred since at least 4.12. User descriptions cover a variety of actions.

User Descriptions

  • Compiling a playerblueprint with firing logic and advanced movement logics like double jump sliding wall running and ledge climbing
  • Compiling a projectile blueprint with replication.
  • Trying to exit Play mode from VR. I hit the Oculus button and exited the app, and UE4 crashed a second or so afterwards
  • i was just changing tab in the editor about the same time an autosave was happening.
  • Working in Levels
  • After launching a network session betweeen the editor playmonde and a standalone game, when I close the standalone game ( server ) and then stop the simulation mode in the editor, it crashes
  • I've been trying to make networking work between a packaged game and an in editor play mode game.

Source Context

1776       AWorldSettings* ULevel::GetWorldSettings(bool bChecked) const
 1777       {
 1778       	if (bChecked)
 1779       	{
 1780 ***** 		checkf( WorldSettings != nullptr, *GetPathName() );
 1781       	}
 1782       	return WorldSettings;
 1783       }
Steps to Reproduce

repro steps currently unknown

Access violation - code c0000005 (first/second chance not available)

UE4Editor_Engine!ULevel::GetWorldSettings() [level.cpp:1643]
UE4Editor_Engine!UWorld::GetWorldSettings() [world.cpp:3863]
UE4Editor_Engine!UWorld::Tick() [leveltick.cpp:1251]
UE4Editor_UnrealEd!UEditorEngine::Tick() [editorengine.cpp:1426]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [unrealedengine.cpp:386]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3119]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]

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Cannot Reproduce
ComponentUE - Gameplay
Affects Versions4.
CreatedAug 21, 2017
ResolvedMay 5, 2020
UpdatedMay 5, 2020