Fbx Importer: Need to clamp incoming vertex color

UE - Editor - Content Pipeline - Import and Export - Jan 30, 2023

Fbx Importer crash if answering no to the incompatible skeleton dialog

Tools - Apr 11, 2017

Quote from the licensee (FbxSkeletalMeshImport.cpp inside "// merge bones to the selected skeleton"): this happens because in UnFbx::FFbxImporter::SetupAnimationDataFromMesh, the function FindFBXMe ...

FBXImportAsset Data is lost on project restart when changing any Build Settings

UE - Editor - Content Pipeline - Import and Export - Jul 27, 2015

After importing a Static Mesh, if you alter any build settings and apply changes, on the next opening of the Project you will not be able to reimport the asset changed. You will have to retarget th ...

Crash with FBX with LODs when distance fields and Generated Lightmaps are enabled

UE - Graphics Features - Jan 12, 2015

DESCRIPTION: When importing a mesh with 1 or more additional LODs when Generate Mesh Distance Fields has been enabled via the Project settings will cause a crash if the import options include using ...

Fbx importer can import valid under 30Hz anim at 30Hz

Tools - Jul 17, 2017

The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...

Importing Camera FBX into a sequence can crash with a headless editor

UE - Anim - Sequencer - Mar 19, 2021

In a headless editor instance we will not be able to send toasts to the user, and we should not notify slate. The Sequencer Tools function library calls MovieSceneToolHelpers::ImportFBXCameraToExist ...

Importing FBX file with same material slots and texture names has bugs

UE - Editor - Content Pipeline - Import and Export - Jul 31, 2020

When importing a file from Blender, UE creates the correct number of materials, but the number of textures is incorrect and is being overwritten, and not importing the correct amount. Tested and re ...

FBX sockets (that are parented to a mesh) import rotated when using axis conversion

UE - Editor - Content Pipeline - Import and Export - Nov 4, 2016

If you have socket locators parented to the mesh in Maya and you have a Y-Up environment, the sockets will import to UE4 with an incorrect orientation. See attached images. ...

Crash when exporting static mesh actor to FBX (Array index out of bounds)

UE - Editor - Content Pipeline - FBX - Apr 25, 2025

I set the Forced LOD Model on the mesh component > 1, then tried to export, this is what causes the crash. Here is my suggested fix, we just don't use Git or I'd do a PR: In the else() branch of FF ...

Reimport Skeletal Mesh break Morph Targets if you have Active Reduction on base LOD

UE - Editor - Content Pipeline - Import and Export - Aug 27, 2019