Description

Running the ResavePackages commandlet will consistently result in a crash. The callstack is here:

Assertion failed: !IsRooted() [Link Removed] [Line: 265]

UnrealEditor_Engine!UMaterialInterface::PreSave() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialInterface.cpp:1629]
UnrealEditor_Engine!UMaterial::PreSave() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\Material.cpp:1056]
UnrealEditor_CoreUObject!UE::SavePackageUtilities::CallPreSave() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\SavePackage\SavePackageUtilities.cpp:656]
UnrealEditor_CoreUObject!`anonymous namespace'::RoutePresave() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\SavePackage2.cpp:278]
UnrealEditor_CoreUObject!UPackage::Save2() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\SavePackage2.cpp:3062]
UnrealEditor_CoreUObject!UPackage::Save() [D:\build\++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\SavePackage.cpp:20]
UnrealEditor_UnrealEd!UEditorEngine::Save() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:4707]
UnrealEditor_UnrealEd!UEditorEngine::SavePackage() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:4716]
UnrealEditor_UnrealEd!SavePackageHelper() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\PackageUtilities.cpp:294]
UnrealEditor_UnrealEd!UResavePackagesCommandlet::LoadAndSaveOnePackage() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\ContentCommandlets.cpp:954]
UnrealEditor_UnrealEd!UResavePackagesCommandlet::Main() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Commandlets\ContentCommandlets.cpp:1348]
UnrealEditor!FEngineLoop::PreInitPostStartupScreen() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:4136]
UnrealEditor!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:140]
UnrealEditor!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:118]
UnrealEditor!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:258]
UnrealEditor!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:298]
UnrealEditor!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

 

Steps to Reproduce
  • Create a new 5.3 project
  • Run the ResavePackages commandlet, with the engine closed and without any arguments
  • Observe it run for some time and then crash with the stack provided in the description

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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-207606 in the post.

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Unresolved
ComponentUE - Rendering Architecture - Materials
Affects Versions5.35.3.2
Target Fix5.5
CreatedFeb 20, 2024
UpdatedApr 4, 2024