Unreal Engine Issues
Unreal Engine Issues
Adding a New Blackboard Key While Searching for a Blackboard Key Causes the Editor to Crash
UE - AI - Nov 12, 2015When you use the search bar located under the New Key button in a Blackboard asset, if you attempt to press New Key while you have text in the search field, the editor will crash after you select th ...
[CrashReport] UE4Editor_Core!FStatsThreadState::ScanForAdvance() [statsdata.cpp:732]
UE - Foundation - Core - 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. Error message: Assertion failed: Item.NameAndInfo ...
Crash after adding Virtual Bone, then Creating Asset
OLD - Anim - Jul 5, 2017Occurs on? 4.16 - 3466753 - YES 4.17 - 3521650 - YES Error message: Assertion failed: RefBonePose.Num() == NumBones [Link Removed] [Line: 4400] Source Context:4387 ResetAnimation(); 4388 ...
AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice
UE - AI - Navigation - Aug 15, 2025USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...
Crash Importing some assets with "Keep Overlapping Vertex"
UE - Editor - Content Pipeline - Import and Export - Nov 29, 2016Download offending asset here: [Link Removed] Error message: Assertion failed: NewPosition >= 0 [Link Removed] [Line: 452] Source Context: 438 virtual ~FFileHandleWindows() 439 ...
Crash reimporting an FBX with LODs and Morph Targets, but leaving "Import LODs" disabled
UE - Editor - Content Pipeline - Import and Export - Jan 4, 2017Error message: Assertion failed: ImportedResource->LODModels.IsValidIndex(LODIndex) [Link Removed] [Line: 282] Source Context: 270 * Constructor. 271 * Converts a skeletal mesh to ...
[CrashReport] UE4Editor_Slate!SMultiBoxWidget::GetCustomizationVisibility() [multibox.cpp:931]
Tools - Jun 14, 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: Assertion failed: Result == FPrope ...
Crash When Typing a Node Comment and Hovering Over the Alignment Option
Tools - Apr 5, 2016Error message: Assertion failed: ParentIndex != INDEX_NONE [Link Removed] [Line: 512] Source Context: 499 } 500 501 return Menu; 502 } 503 504 ...
The DemoRec console command crashes the editor if used during PIE
UE - Networking - Aug 5, 2015The DemoRec console command crashes the editor if used during PIE. Reproduced in 4.9 Preview 2 binary and 4.9 Releases (//depot/UE4-Releases/4.9/Promotable-CL-2643093). Does NOT occur in 4.8.3 bina ...
[CrashReport] Crash When Undoing Changes in Widget Blueprints
Tools - Oct 13, 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 ( ...