Unreal Engine Issues
Unreal Engine Issues
iOS - Launch On - Application Crashes on device, on iOS 8 devices
UE - Platform - Mobile - Jul 20, 2016Blueprint Template Launch On from Mac crashes on device. ...
If a widget is set to be the parent of another widget and that widgets child is added to its designer tab, opening one of those widgets will cause a crash
UE - Editor - UI Systems - Nov 1, 2016If a widget is set to be the parent of another widget and that widgets child is added to its designer tab, opening one of those widgets will cause a crash ...
FHLSLMaterialTranslator::GetMaterialEnvironment can crash or not load UMaterialParameterCollections
UE - Rendering Architecture - Materials - Apr 30, 2025In UE 5.5, the Editor may crash in FHLSLMaterialTranslator::GetMaterialEnvironment when loading materials with Material Parameter Collections, likely due to async loading. Calling ParameterCollectio ...
Crash Occurs in UAIPerceptionSystem::UnregisterSource When Exiting PIE
UE - AI - Feb 17, 2016User Description: The Perception System crashes when exiting PIE on UAIPerceptionSystem::UnregisterSource. It doesn't check for null sense classes which are there by design I suppose. I transition m ...
Running Lyra with a Startup Movie causes a crash
UE - Editor - UI Systems - Slate - Jun 26, 2023Adding a startup movie to a Lyra Starter game project will cause a crash in a packaged build. Full callstack is attached ...
Crash in Network Prediction during PeriodicDamage GameplayEffects Test
UE - Networking - Jan 27, 2021Crash during Periodic Damage test for Gameplay Abilities system in the Network Prediction plugin, when both plugins are enabled. Related to a null GameInstance. ...
Crash processing is taking 3 minutes to complete
UE - Foundation - Core - May 26, 2015Jaroslaw S requested a Jira be put in for this issue, their logs are attached to the AnswerHub post: "Based on the logs, it looks like he is getting the callstack now. I noticed that one part of th ...
Crash after Undo and garbage collection on sequencer track
UE - Anim - Sequencer - Apr 18, 2019A crash occurs after adding an additional camera track, undoing the additional, and then calling garbage collection Appears to be the same callstack found here [Link Removed] ...
Packaged project crash on open with GEngine & ConstructorHelpers
UE - Foundation - Core - UObject - Jun 28, 2017When GEngine is used in a constructor before calling a ConstructorHelper function, the packaged game will crash on open with an assertion about recursion (see screenshot) ...
PerceptionSystem crashing on removing a listener as part of DestroyActor call
UE - AI - Apr 14, 2015User reported a crash in UAISense_Hearing::OnListenerRemovedImpl when perception listener is being removed as a response to DestroyActor call. ...