Unreal Engine Issues

QAGame crashes on launch for Mac

Crash when compiling shaders on Mac. Issue is most reproducible when running a standalone PIE instance. Even though running in -game is similar and will crash if all shaders for the map loaded are n ...

Crash with FBX Import as Skeletal Mesh

Using the test asset provide the editor will crash when changing the import to Skeletal Mesh. This is a regression from 4.13 where this could be imported as Skeletal Mesh without issue. In 4.14 an ...

Engine Crashing with AMD R9 2 and 3 Series Cards

Multiple users are reporting crashes in the Engine when using an AMD R9 380 and 390 series cards. There was a request to have these cards added to compat lab for testing, but have not heard any upd ...

Editor crash switching active level

Editor Crash when switching from a level to its sublevel. The sublevel contains an instance of an actor that references a character actor. See UDN for full context. Orignal UDN:https://udn.unrealen ...

Crash when Saving Level after Successfully Building with Lightmass on Large Landscapes

A crash occurs when attempting to save a level after building static lighting for a large landscape. I was originally investigating a memory leak issue with landscapes, and the user provided the pa ...

Editor crashes when attempting to open maps and modes subcategory after changing player pawn from migrated content folder location that gamemode is referencing

The editor crashes when a user attempts to open the maps and modes subcategory of project setting while using a gamemode from migrated content, then moves the player pawn in the content browser to a ...

[Crash]-[Reimport] - Crash on reimporting CAD file with deleted light sources

Crash in Middle of PIE with Level sequences and MRQ running

Repro Rate: 5/5 Tested this a few times and the crash seems to come in at different intervals, some had the prestreaming almost finished, then would crash. Working on a video to show crash to add ...

PhysX Crash when Spawning Destructible Meshes at Runtime

I was only able to reproduce this issue after receiving the user's project. The project he provided crashes when I follow his directions, but after looking at the blueprints involved in the crash r ...

Crash upon adding an Interface to a Blueprint that has a function name that matches the name of a variable in the Blueprint.

When you add an Interface to a Blueprint that contains a variable with the same name as one of the Interface's functions, the editor will crash upon compiling the blueprint. In 4.16, this only cause ...