Unreal Engine Issues
Unreal Engine Issues
Crash when clicking on tutorial prompt for signing keys on Mac
Tools - May 2, 2017Attempting to package for TvOS on Mac without a signing key produces an error in the message log informing the user of the missing key. The error has a link to a tutorial on how to resolve it. Click ...
[CrashReport] Mac/Metal crash - Assertion failed: (PixelShader->Bindings.InOutMask
UE - Graphics Features - Nov 10, 2017This is a low frequency but trending crash coming out of 4.18. User DescriptionsAttempting to open a copied/converted from 4.16.3 project on 4.18 preview 4. Problem arose after preview 3. Was able ...
ShadowProject gpu performance regression from Aftermath
UE - Graphics Features - May 9, 2017The issue was originally noticed between 4.15.1 and 4.16 Preview, but now appears to have regressed between 4.15.1 and 4.15.2. ...
CLONE - ShadowProject gpu performance regression from Aftermath
UE - Graphics Features - May 19, 2017The issue was originally noticed between 4.15.1 and 4.16 Preview, but now appears to have regressed between 4.15.1 and 4.15.2. ...
Runtime Virtual Texture (RVT) baked mips using Streaming Virtual Texture (SVT) only bakes the base colour
UE - Graphics Features - Sep 13, 2024Using Streaming Virtual Textures for the lower mips of an RVT using Base Color, Roughness, Normal seemingly leads to both roughness and normal being sampled as 0. This causes a significant shading a ...
Editor crash on level load with multiple actors with the name "(none)"
Tools - Jun 14, 2017If three or more actors are saved to a level with the same name in the Content Browser of "none", attempting to load the level (open or right click on umap asset in content browser) causes the edito ...
[CrashReport] Tutorial crash UObject::execLetValueOnPersistentFrame()
UE - Gameplay - Blueprint - Jul 7, 2017This is another Tutorial crash that shares a similar callstack with [Link Removed] and [Link Removed], but those specific repro steps have been fixed while this one is still occurring in 4.16.2. On ...
Division by zero causing NaN/Inf on USkeletalMeshComponent::UpdateRigidBodyScaling() when setting scale to zero and back
UE - Runtime - Simulation - Feb 11, 2026Up to UE 5.5, skeletal mesh physics did not get updated when the component's scale changed. This was improved on January 2025 with CL 39190335, which addressed [Link Removed] ...
Exporting Alembic Skeletal mesh from UE4 to FBX causes a crash
Exporting an alembic skeletal mesh that has been imported and then exporting it to FBX using the asset actions options will cause a crash. Tested with: Crash - 4.13.0 Binary CL-3106830 Crash - 4.1 ...
Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor
UE - Gameplay - Blueprint - Dec 9, 2014Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor. Crash Report: [Link Removed] Call Stack:<unknown module>! KERNELBASE!Rai ...