Unreal Engine Issues
Unreal Engine Issues
Android ETC2 Debug Builds Crash on Startup
UE - Platform - Mobile - Sep 9, 2020Android apps build with the debug configuration on ETC2 will crash on launch. ...
Editor crashed when opening TM-MeshPaint in QAGame
UE - Graphics Features - Jan 20, 2017While reviewing [Link Removed] test case, I hit the following crash opening the TM-MeshPaint level. On first attempt shaders were compiling, on attemps after, editor crashes much faster. ...
BP - Nativization will fail at cook time if a BP class and a User-Defined Structure reference each other.
UE - Gameplay - Blueprint - Apr 20, 2017Note: This happens with "Exclusive" nativization mode as well. This occurs because the nativized UDS 'GetDefaultValue()' method is generated into a .h file rather than a .cpp file. This creates a c ...
Loading Duplicated Level via Python API Crashes Editor
UE - Editor - Workflow Systems - Feb 16, 2023When called from Python, in 5.1 the load level invocation results in a kernel panic style crash of the editor, with a message about the map leaking memory and not being able to be garbage collected ...
Exiting PIE with dedicated server checked causes editor to crash on Linux
UE - Platform - Linux - Oct 25, 2016Checking the box for Dedicated Server in the Play dropdown menu causes the editor to crash when exiting PIE. This does not occur in 4.13 or 4.14 on Windows. ...
Crash using a bitmap in a material
TM - Core - Mar 3, 2025see repro steps: direct crash the material comes from FAB model: [Link Removed] ...
[AI] Crash when gathering heightfield geometry on worker thread
UE - AI - Navigation - Jun 25, 2025From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...
Editor crashes when keying a frame to an Animation from Pose with Appended Frames
UE - Anim - Runtime - May 17, 2022This is a regression. Tested in //UE4/Release-4.27 CL18319896 Editor crashes when keying a frame to an Animation from Pose with Appended Frames. ...
Launch on fails during staging with a SafeCopyFile Exception for MfMedia.uplugin
Tools - Jan 10, 2017Was able to repro this on machines with and without machines set up for Xbone testing. ...
Crash Occurs When Creating Pose Asset from an Animation in Persona
OLD - Anim - Feb 1, 2018Engine crashes when creating a new pose asset in persona using the Create Asset option -Tested with walk, idle, and run anims -Didn't crash only once out of the several times tested with the Third ...