Unreal Engine Issues
Unreal Engine Issues
LevelStreamingPersistence: Crash when streaming in destroyed map actor with persisted properties
UE - Engine Scaling - Streaming - Mar 6, 2026Context The LevelStreamingPersistence plugin can be used to remember and restore properties on actors and components that are part of a streamed level. Saved property values are restored when a lev ...
[CrashReport] Commandlet crash - UE4Editor_Engine!FAnimationUtils::CompressAnimSequenceExplicit() [animationutils.cpp:621]
OLD - Anim - Sep 7, 2017This is an infrequent commandlet crash that has affected a number of users exclusively in 4.17.1 (possible regression from 4.17.0?). There are also two instances of older cases in 4.13 and 4.15, bu ...
[CrashReport] UE4Editor_UnrealEd!UTransBuffer::Cancel() [editortransaction.cpp:697]
Tools - Nov 17, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 833] ...
[CrashReport] Assertion failed: SizeX <= GetMax2DTextureDimension() in d3d11texture.cpp
UE - Graphics Features - Aug 22, 2017This is a common and longstanding assertion that has occurred since at least the 4.13 release. User DescriptionsI was messing with a sequencer's camera settings (not playing back, but active) and c ...
[CrashReporter] Crash in FClassExclusionData::IsExcluded() (infinite loop)
UE - Gameplay - Aug 10, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Note: This appears to be a Commandlet crash. Erro ...
Recently Placed Actor Factories can be Mismatched
UE - Editor - Verse Class Editor - Apr 24, 2023The Add Content menu in the engine (on the menu bar just above the viewport) maintains a category of Recently Placed actors. In order to remember items between runs of the editor, the Recently Place ...
[CrashReport] UE4Editor_Engine!TScopedPointer<FStaticMeshRenderData>::operator->() [scopedpointer.h:74]
UE - Graphics Features - Jun 6, 2016Log showing the issue is caused by a reimport:https://udn.unrealengine.com/questions/331317/recurring-editor-crash.html This Jira was created from CrashReports submitted by the public due to the hi ...
[CrashReport] UE4Editor_Engine!UMaterialInterface::GetBaseMaterial() [materialinterface.cpp:268]
UE - Simulation - Physics - Destruction - Nov 23, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Access violation - code c0000005 (first/second chance not available) Source C ...
[CrashReport] UE4Editor_SlateCore!FReply::FReply() [reply.h:244]
UE - Graphics Features - Oct 27, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
[CrashReport] UE4Editor_Foliage!FFoliageInstanceBaseCache::AddInstanceBaseId() [foliageinstancebase.cpp:101]
UE - World Creation - Worldbuilding Tools - Foliage - May 17, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: InstanceBaseMap.Num() == InstanceBaseInvMap.Num() [Link Remo ...