Unreal Engine Issues
Unreal Engine Issues
Clean DocumentDB setup fails indexing
UE - Foundation - Horde - Server - Feb 21, 2025Source [Link Removed] The user has encountered the error log: MongoDB.Driver.MongoCommandException: Command createIndexes failed: Implicit collection creation not supported when creating indexes I ...
Engine crashes when trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph
UE - Gameplay - Sep 27, 2019When trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph the engine crashes. If the blueprint that is copied into has a GameplayTag variable with the sa ...
[AI] BehaviorTreeEditor crash when swapping from Behavior Tree to Blackboard view.
UE - AI - BehaviorTree - Aug 24, 2023The first time that a Behavior Tree editor window changes from the tree to the Blackboard can cause a crash if you add and remove a key from the Blackboard via a different Behavior Tree editor windo ...
Crash when deleting mesh instances of a HISM component
UE - World Creation - Worldbuilding Tools - Foliage - Apr 24, 2019When trying to delete an existing (and saved) mesh instance from a Hierarchical Instanced Static Mesh component the Editor crashes due to a failed assertion, however clearing all instances does not ...
Crash on Build All Levels
UE - World Creation - Worldbuilding Tools - HLOD - Apr 7, 2022Crash on Build All Levels after a HLOD warning. EXCEPTION_ACCESS_VIOLATION reading address 0x00000000000000f0 ...
Using the Execute Console Command node to run demoplay causes the editor crash/freeze
UE - Networking - Nov 13, 2015This bug has different behavior throughout the 4 different versions listed. 4.8.3 - Gives an assert 4.9.2 & 4.10 - Gives a fatal error crash 4.11 (Main) - Freezes the editor without a crash report ...
Editor crashes when right clicking a box collision after adding a converted static mesh in blueprint editor
UE - Gameplay - Blueprint - Sep 1, 2016I created a cylinder with a subtractive cylinder inside of it. I also used a box BSP with a subtractive box inside of it and got the crash to repro. I tried with a sphere BSP twice and didn't get ...
Editor crashes if Sequencer has keyframes for a variable that has changed
UE - Anim - Sequencer - Sep 19, 2018The Editor crashes if loaded sequence has keyframes for an actor variable that has been changed, instead of soft erroring out. This was reported and tested on 4.20.3 (CL-4369336). It was reproduced ...
Editor Crashes when copy/pasting an emitter in the Niagara timeline
UE - Niagara - Feb 8, 2023When creating the emitter's track widget we search for the stack view model's root entry, but the stack view model pointer is null, so we crash. ...
HTML5 - View is incorrectly drawn
UE - Platform - Mobile - Sep 23, 2016The view in a packaged HTML build will not draw the game view as the entire view space, neither in custom sized window nor fullscreen. ...