Unreal Engine Issues
Unreal Engine Issues
Crash from Tmap removing a key then printing the remaining keys
UE - Gameplay - Blueprint - Apr 7, 2017Crash from Tmap removing a key then printing the remaining keys. This has occurred in the third person template, but no further testing has been done for other templates. Regression: TMaps did not ...
Crash when a Deferred Decal (Translucent) base material has a Nanite Override (Masked Surface) Material and the mesh has Nanite + Ray Tracing enabled.
UE - Graphics Features - Ray Tracing - Aug 14, 2025A crash occurs when Nanite override material instance is used in a project with Ray tracing enabled where: 1 The Material assigned to the static mesh uses Deferred Decal / Translucent and the Nani ...
Casting to a child with a self reference can cause a crash
UE - Gameplay - Blueprint - Aug 13, 2015Casting to the child of a blueprint using the self reference (as the parent) throws a warning. Then placing a self reference anywhere in the event graph of the child by it's self will cause a crash ...
Crash in Hand IK Retargeting with two entries under "IKBones to Move"
UE - Anim - Rigging - Feb 28, 2017Crash in Hand IK Retargeting with two entries under "IKBones to Move" Only seems to happen when you have a hand bone in the second slot of "IKBones to move" ...
Editor crash when adding elements to blueprint Set/Map
UE - Gameplay - Blueprint - Mar 22, 2017Adding multiple element to TMap / TSet variable at once with a for loop causes the editor to lock up / crash (respectively). Regression: No - Map & Set variable types not available prior to 4.15 ...
10 or more Static Meshes set to Simulate Physics and Replicates Movement will crash the editor with PIE set to 2 or more players
UE - Networking - May 19, 201510 or more Static Meshes set to Simulate Physics and Replicates Movement will crash the editor with PIE set to 2 or more players. Less than 10 don't cause a crash. The user reporting this got a mor ...
Clicking the Add Variable button in a Struct that is referenced as two inputs in a function that is called in an Actor Blueprint's Construction Script causes a crash
UE - Gameplay - Blueprint - Jun 28, 2015Clicking the Add Variable button in a Struct that is referenced as two inputs in a function that is called in an Actor Blueprint's Construction Script causes a crash. This does not occur in the Even ...
Editor crash when Sequence component is added to code class
UE - Anim - Sequencer - Aug 31, 2017Adding a USequenceComponent to a code class will cause the editor to crash when the component is selected in blueprints Regression: No - same behavior occurs in 4.16.3 (CL 3561208) ...
r.SimpleDynamicLighting causes crash
UE - Graphics Features - Jul 2, 2015Setting the console command r.simpledynamiclighting to true in the editor causes massive rendering issues and if you attempt to open a New Material, the editor will crash. See attached Movie Also ...
File Media Output Capture Crashes on OS X
Media Framework - Aug 26, 2020On OS X, image frames output in PIE but crash occurs in standalone mode; The .wav file is written but is empty (the media player does not seem to go to the master submix correctly) and it seems to ...