Unreal Engine Issues
Unreal Engine Issues
Crash when creating deferred decal material when using -d3ddebug command line argument to launch editor
UE - Graphics Features - Jul 18, 2016Discovered this while verifying [Link Removed]. Devs informed me of a command line argument that could be used to output D3D11 debug information and using it caused crashes in both //UE4/Main @ CL 3 ...
MoviePipeline: HighRes Tiling feature crashes at high resolutions
UE - Anim - Sequencer - MRQ - Jan 4, 2023If you run with -rdgimmediate -onethread you can get the callstack that indicates that MRQ is still attempting to allocate the full sized texture and not the individual tile size. ...
Linux crash on Import
UE - Platform - Linux - Jun 2, 2016Attempting to import content into a project causes the editor to crash on Linux ...
Setting multiple identical actors to replicate movement will crash on PIE with multiple players
UE - Networking - Jan 28, 2015If ten or more of the same actor in a level have the "replicate movement" checkbox set to true, the editor will crash on PIE if the number of players is set to 2 (or with 1/2/3 players if dedicated ...
Crash when unloading Lighting Scenario Streaming Level
UE - Graphics Features - Nov 16, 2016If a sub-level is set as a Lighting Scenario in the Levels tab, calling Unload Stream Level will cause standalone / packaged games to crash. Regression: No - Lighting Scenario not available before ...
Crash After cutting and pasting a blend radius track in sequencer
UE - Anim - Sequencer - Oct 27, 2017Crash After cutting and pasting a blend radius track in sequencer ...
[CrashReport] Mac crash - FRCPassPostProcessInput::ComputeOutputDesc()
UE - Graphics Features - Sep 28, 2017This is a new Mac callstack that just appeared after the 4.17.2 hotfix. The callstack shares similarities to older Windows crashes and may be related:https://jira.it.epicgames.net/browse/UE-42135ht ...
LIVE: Crash when stopping simulation after using Keep Simulation Changes feature.
Tools - Nov 10, 2014A user is experiencing a crash when using the "Keep Simulation Changes" feature in the Editor after running a simulation of their project. The user allows the simulation to run briefly before pressi ...
Unable to interact or collide with geometry collection after Removal on Sleep or Break timer finishes, yet unbroken piece continue to render
UE - Simulation - Core - Dec 18, 2025Context: A static mesh is able to have a geometry collection generated from it using the Fracture editing mode. It can be fractured in many different ways, and when acted upon by a chaos field agent ...
BuildPatchTool crashes on Mac and Linux when building android or ios with multiple chunks
Portal - Feb 18, 2020"It seems that deallocation of TLazySingleton<FInternationalization> causes unhandled exception. If DISABLE_LAZY_SINGLETON_DESTRUCTION=1 is provided - the build completes successfully" ...