Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Assertion on in UMaterialInterface::InitDefaultMaterials()
UE - Graphics Features - Jun 28, 2017This is a common Mac crash occurring in the 4.16.1 release. I have not found any evidence of it occurring on Windows. The callstack closely matches [Link Removed], which was briefly experienced by ...
Editor Crashes When Attempting to Create/Open a Blueprint While 'Show Friendly Variable Names' is False
UE - Gameplay - Oct 12, 2018When the 'Show Friendly Variable Names' option is set to false in Editor preferences, attempting to create (once you press 'Enter' to accept the new Blueprint name) or open a Blueprint causes the ed ...
Editor crashes when a hot reload is performed on a project that contains a custom User Defined Struct code class
UE - Foundation - Core - Feb 20, 2017Adding a custom User Defined Struct code class to a project causes the Editor to crash whenever a hot reload is performed on that project. Removing the custom User Defined Struct class allows hot re ...
EQS Generators named "NewBlueprint" cause errors and crash
UE - AI - Feb 11, 2015Naming an EnvQueryGenerator_BlueprintBase derived BP "NewBlueprint" and deleting it causes new custom generators to not appear in the EQS. This can also lead to a crash when searching for the new ge ...
Editor crashed on opening level blueprint
UE - Gameplay - Apr 10, 2017I've been unable to reproduce this issue. Once only occurrence so far. I did some other things inside the level in between these steps like pressing play and copying, rotating, deleting objects in ...
Crash upon using marquee selection in Anim Graph while debugging
UE - Gameplay - Blueprint - Apr 20, 2016A user reported a crash that occurs only in Debug Editor, related to the Anim Graph of an Animation Blueprint. The issue involves marquee selecting multiple nodes inside of a State Machine transitio ...
.wav files with max concurrency count data outside proper range will crash editor when played
UE - Audio - Apr 12, 2016Editor crashes if a set of sound files provided by a user is played. This occurs in any project that the asset is migrated to. Frequency: 5/5 NOTE If the asset is exported outside of the editor ...
Changing Area Light Settings In Blueprint Causes Crash
OLD - Enterprise - Aug 27, 2018Changing area light settings in blueprint will Cause a crash. Found in 4.20 CL# 4302132 and 4.21 CL# 4307852 Unable to test in 4.19 due to provided project being in 4.20 ...
[CrashReport] Mac crash - FCocoaRunLoopSource::Process
UE - Platform - Apple - Sep 14, 2017This is a somewhat common Mac crash that has occurred since at least 4.14 and into 4.17. Users have not provided any descriptions of their actions when the crash occurred. The callstack contains l ...
Projects crash when launching onto Firefox 64-bit
UE - Platform - Mobile - May 8, 2017QAGame crashes when it launched onto Firefox. The following exception occurs with the error message:*Expression (0) failed in D:\UE4_Dev-Rendering\Engine\Source\Runtime\Core\Private\Async\TaskGraph ...