MeshExporter Changelog

This changelog covers customer-visible updates to Jobutsu Mesh Exporter. Version 1.2.3 supports Unreal Engine 5.6, 5.7, and 5.8 on Windows.

Version 1.2.3 — 15 October 2026

Added optional Bake materials and textures for Blender (1024 px) export.
Material export writes an .mtl file and PNG texture folder beside the OBJ so supported materials appear when the model is opened in Blender.
Added support for the newer standalone MetaHuman DNA asset workflow in Unreal Engine 5.8 while keeping support for legacy attached DNA.
Unreal Engine 5.8 can also look for a suitable nearby DNA asset or ask you to choose the character’s external .dna file.

Corrected upside-down UVs on direct DNA quad exports opened in Blender.
Corrected baked PNG alpha so face, eye, and other opaque textures no longer disappear because of the image’s alpha channel.
Added separate opacity-map output for masked and translucent materials, including eyelashes and other cutout surfaces.
Prevented unused material slots from other LODs being added when the selected LOD information is available.
Removed unnecessary zero-value emissive output.

Removed the DNACalib dependency. The exporter now uses the DNA reader support supplied through RigLogic.
Reduced editor-module dependencies used by material export.
Refreshed the product icon and customer guide.
Strengthened versioned packaging checks for Unreal Engine 5.6, 5.7, and 5.8.

A compatible DNA source opens the DNA export path and preserves the DNA polygon layout, including quads.
In Unreal Engine 5.6 and 5.7, a mesh without compatible DNA uses the material-slot triangle export path.
In Unreal Engine 5.8, the exporter checks supported DNA sources and offers external .dna selection instead of silently switching to triangle export.
Material baking is optional. Leave it disabled for a geometry-only OBJ export.
OBJ export does not include a skeleton, skin weights, animation, morph targets, or an editable Unreal material graph.

Install the package made for your exact Unreal Engine version.
Remove older copies of Jobutsu Mesh Exporter from other project or engine plugin folders, then restart Unreal Editor.
Re-export older files if they have inverted UVs or required manual Alpha Mode changes in Blender.