An assertion occurs when creating a New Level from the Levels window while it is pinned to the side bar.
Expected Results:
A new level is created and added as a sub level
Actual Results:
The editor crashes with an Assertion.
Assertion failed: WorldModel.IsUnique() [File:D:\build\++UE5\Sync\Engine\Source\Editor\WorldBrowser\Private\WorldBrowserModule.cpp] [Line: 124]
=== Critical error: === Assertion failed: WorldModel.IsUnique() [File:D:\build\++UE5\Sync\Engine\Source\Editor\WorldBrowser\Private\WorldBrowserModule.cpp] [Line: 124] [Callstack] 0x00007ff84a93bbee UnrealEditor-WorldBrowser.dll!FWorldBrowserModule::ReleaseWorldModel() [D:\build\++UE5\Sync\Engine\Source\Editor\WorldBrowser\Private\WorldBrowserModule.cpp:124] [Callstack] 0x00007ff84a91fca0 UnrealEditor-WorldBrowser.dll!FWorldBrowserModule::OnWorldDestroyed() [D:\build\++UE5\Sync\Engine\Source\Editor\WorldBrowser\Private\WorldBrowserModule.cpp:182] [Callstack] 0x00007ff84a875031 UnrealEditor-WorldBrowser.dll!TBaseRawMethodDelegateInstance<0,FWorldBrowserModule,void __cdecl(UWorld *),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:470] [Callstack] 0x00007ff87300cd70 UnrealEditor-Engine.dll!TMulticastDelegate<void __cdecl(UWorld *),FDefaultDelegateUserPolicy>::Broadcast() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateSignatureImpl.inl:967] [Callstack] 0x00007ff8745db74a UnrealEditor-Engine.dll!UWorld::DestroyWorld() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\World.cpp:2046] [Callstack] 0x00007ff870382a8c UnrealEditor-UnrealEd.dll!UEditorEngine::EditorDestroyWorld() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:2149] [Callstack] 0x00007ff8703a0ad6 UnrealEditor-UnrealEd.dll!UEditorEngine::Map_Load() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:2565] [Callstack] 0x00007ff870391bbf UnrealEditor-UnrealEd.dll!UEditorEngine::HandleMapCommand() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:6232] [Callstack] 0x00007ff870384145 UnrealEditor-UnrealEd.dll!UEditorEngine::Exec() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorServer.cpp:5722] [Callstack] 0x00007ff870c83fce UnrealEditor-UnrealEd.dll!UUnrealEdEngine::Exec() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdSrv.cpp:659] [Callstack] 0x00007ff8706b03ad UnrealEditor-UnrealEd.dll!FEditorFileUtils::LoadMap() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\FileHelpers.cpp:2761] [Callstack] 0x00007ff869d0f134 UnrealEditor-LevelEditor.dll!FLevelEditorActionCallbacks::NewLevel() [D:\build\++UE5\Sync\Engine\Source\Editor\LevelEditor\Private\LevelEditorActions.cpp:243] [Callstack] 0x00007ff869ce99d7 UnrealEditor-LevelEditor.dll!TBaseStaticDelegateInstance<void __cdecl(void),FDefaultDelegateUserPolicy>::ExecuteIfSafe() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:731] [Callstack] 0x00007ff879934801 UnrealEditor-Slate.dll!FUICommandList::ConditionalProcessCommandBindings() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Commands\UICommandList.cpp:217] [Callstack] 0x00007ff87998f86d UnrealEditor-Slate.dll!FUICommandList::ProcessCommandBindings() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Commands\UICommandList.cpp:161] [Callstack] 0x00007ff869e13d6e UnrealEditor-LevelEditor.dll!SLevelEditor::OnKeyDown() [D:\build\++UE5\Sync\Engine\Source\Editor\LevelEditor\Private\SLevelEditor.cpp:1569] [Callstack] 0x00007ff879854a85 UnrealEditor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FKeyEvent,<lambda_9dc931af886a2950ba18f18a6edc755e> >() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:410] [Callstack] 0x00007ff8798b70b8 UnrealEditor-Slate.dll!FSlateApplication::ProcessKeyDownEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:4451] [Callstack] 0x00007ff8798ac181 UnrealEditor-Slate.dll!FSlateApplication::OnKeyDown() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:4362] [Callstack] 0x00007ff8e282a594 UnrealEditor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2045] [Callstack] 0x00007ff8e2819247 UnrealEditor-ApplicationCore.dll!FWindowsApplication::DeferMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2699] [Callstack] 0x00007ff8e282ce51 UnrealEditor-ApplicationCore.dll!FWindowsApplication::ProcessMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:1078] [Callstack] 0x00007ff8e28149a7 UnrealEditor-ApplicationCore.dll!FWindowsApplication::AppWndProc() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:916] [Callstack] 0x00007ff9147d5c0d USER32.dll!UnknownFunction [] [Callstack] 0x00007ff9147d58de USER32.dll!UnknownFunction [] [Callstack] 0x00007ff84a5966f2 InkObj.dll!UnknownFunction [] [Callstack] 0x00007ff8e8d61028 atlthunk.dll!UnknownFunction [] [Callstack] 0x00007ff9147d5c0d USER32.dll!UnknownFunction [] [Callstack] 0x00007ff9147d5602 USER32.dll!UnknownFunction [] [Callstack] 0x00007ff8e282e148 UnrealEditor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp:138] [Callstack] 0x00007ff713767114 UnrealEditor.exe!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5139] [Callstack] 0x00007ff713780d9c UnrealEditor.exe!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:183] [Callstack] 0x00007ff713780e8a UnrealEditor.exe!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:147] [Callstack] 0x00007ff713783c4d UnrealEditor.exe!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:283] [Callstack] 0x00007ff713795534 UnrealEditor.exe!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:330] [Callstack] 0x00007ff7137986e6 UnrealEditor.exe!__scrt_common_main_seh() [d:\a01\_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] [Callstack] 0x00007ff915377c24 KERNEL32.DLL!UnknownFunction [] [Callstack] 0x00007ff9154cd721 ntdll.dll!UnknownFunction []
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-150873 in the post.
2 |
Component | UE - World Creation - Worldbuilding Tools |
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Affects Versions | 5.0.1 |
Target Fix | 5.6 |
Created | May 2, 2022 |
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Updated | Oct 11, 2024 |