Unreal Engine Issues
Unreal Engine Issues
Crash occurs in PIE when an Actor calls a method in a UObject that attempts to modify an FString member of the UObject
UE - Foundation - Core - Jan 31, 2019The Editor will crash in PIE when an Actor calls a method in a UObject that modifies some FString members in the UObject. In the Attached project, the UObject class contains two FString members and ...
Crash when rotating and resizing a Background Blur widget
UE - Editor - UI Systems - Feb 16, 2017If the user rotates a background blur widget and then tries to resize it, this will cause the editor to crash Note: Widget cannot be opened if the widget is saved in this state. ...
Crash: Opening Project Browser from Launcher with VR Mode auto-entry enabled with HMD active (worn)
UE - Editor - Workflow Systems - Apr 24, 2017If you enable VR Mode auto entry, close the project, and then attempt to launch the engine again from the Binary launcher while the HMD is active (being Worn), the Project Browser will crash ...
Physics Asset ignoring Root Bone Rotation collision in Skeletal Mesh.
UE - Simulation - Physics - Dec 20, 2018**Physics collision ignores Capsule Collision, When Skeletal mesh root bone orientation is rotated in the Z-Axis, resulting in unexpected collision behavior. Screen shot has been attached to de ...
Error during packaging if nativizing a blueprint that contains a TMap with a UserDefinedEnum as a key
UE - Gameplay - Blueprint - Jun 17, 2019Certain Map container calls (e.g. Find, Add) will fail to compile at packaging time if a Blueprint class containing a Map variable with a user-defined enumeration as the key type is nativized. This ...
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 ...
Crash adding subscene to a looped subscene - MovieSceneSequenceTransform.h - WarpCounts.Num() == NestedTransformsSize
UE - Anim - Sequencer - Oct 11, 2021Crash adding subscene to a looped subscene. Note this did not repro with brand new sequences not sure what's different about this older content. This also occurs in Release-5.0. ...
PN Tessellation and Grass Node Crash Engine
UE - LD & Modeling - Terrain - Landscape - May 14, 2015Landscape Materials which use the new Grass Output and have Tessellation turned to PNTriangles will crash the engine Also reproduced in Main Promotable-CL-2550487 & Releases/4.8/Promoted-CL-255045 ...
Crash when enabling r.PSOPrecache.Resources due to check() in FSkeletalMeshObjectGPUSkin::GetUsedVertexFactoryData
UE - Rendering Architecture - Dec 3, 2024The game crashes because of a nullptr SkinnedMeshComponent in FSkeletalMeshObjectGPUSkin::GetUsedVertexFactoryData when r.PSOPrecache.Resources is enabled and a skeletal mesh is loaded due to a new ...
BP - Exclusive nativization will fail at cook time if an Actor BP class enabled for nativization includes a Component BP that's not enabled for nativization in its component list.
UE - Gameplay - Blueprint - Apr 26, 2017This happens because the Blueprinted component is not also enabled for nativization, but the nativized Actor BP tries to use it as a native class type. Current workaround: Ensure that the Blueprint ...