Grouping of multi-part Skeletal Mesh LODs causes only one part to import

Tools - Mar 11, 2016

When setting up Skeletal Mesh LODs, groups within an LOD Group in Maya are now accepted on import as of 4.12. However, it only brings in one mesh from the group. See attached image and fbx ...

Generate Lightmap UVS Doesn't Update the Lightmap Coordinate Index

Tools - Jul 23, 2018

When importing an fbx file and using 'generate lightmap uvs', the light map coordinate index will not update correctly. Working properly in 4.19 CL# 4033788 Found in 4.20 CL# 4212847 and 4.21 CL# ...

Manually importing LODs are rotated 90 degrees when using Transform Vertex to Absolute

Tools - May 26, 2016

When importing a Static Mesh if you use the default settings and then manually import any LODs for that static mesh they will be rotated by 90 degrees. I found that disabling Transform Vertex to A ...

Morph target LOD over 0 not worrking with GPU skin

UE - Rendering Architecture - RHI - Dec 17, 2019

I do not know what happen here and I need the help of the rendering team to debug this issue. There is no log at all even with -d3debug If you import the file SK_LOD_Morph_Working.fbx its a similar ...

Importing through Python fails

UE - Editor - Content Pipeline - Import and Export - Feb 20, 2019

Version 4.21:The script result in popping the Alembic Import windows instead of a silent importThe provided options are ignored by the importer.  Version 4.22: Results in the provided callstack wi ...

Re-Importing a Static Mesh Removes All Sockets

Tools - Mar 9, 2017

Re-importing a static mesh results in all currently applied sockets being removed from the static mesh in the Editor. Workaround: Setting the sockets up in the Native 3D editing software followin ...

Virtual Bone effect is lost after re-importing mesh

OLD - Anim - Dec 31, 2018

After setting up a Virtual Bone on the skeleton and having it drive a Skeletal Control Node in an Animation Blueprint. Reimporting the skeletal mesh will cause the setup in the Anim BP to revert bac ...

OBJ import - Auto Triangulation - Error: No polygon were found on mesh ''

UE - Editor - Content Pipeline - Import and Export - Nov 23, 2019

"When translating some geographic data into a .OBJ, and importing into UE4. More than 165 of the meshes work. Some, i am having a hard time with. I've attached an example. AUT-mesh.obj is one of the ...

Skeletal Mesh breaks perspective view in Physics Asset Tool.

UE - Simulation - Physics - Feb 19, 2016

When importing licensee's provided asset the Physics Asset generated will completely break the Perspective View in PhAT. The other orthographic views will work as intended though. The licensee has ...

Unable to remove StaticMesh LODs in editor

Tools - Jan 18, 2016

Static Mesh LODs cannot be removed after import from the Static Mesh Editor unless you have Simplygon installed. Hovering over the tooltip for "Number of LODs" indicates this as well with "Auto mesh ...