AttributeError: 'NoneType' object has no attribute 'bones'

[SHZEXIN]

After completing the Windows compilation, I got the .bvh file using the CLI, and then utilized Blender along with MPFB and blender_bvh_plugin.py.

I got an error:
Python: Traceback (most recent call last):
File "C:\Users\able1\Desktop\SAM3DBody-cpp-main_WIN_SRC\75.blend\blender_bvh_plugin.py", line 577, in execute
File "C:\Users\able1\Desktop\SAM3DBody-cpp-main_WIN_SRC\75.blend\blender_bvh_plugin.py", line 557, in copySkeletonConstraints
AttributeError: 'NoneType' object has no attribute 'bones'

CLI：
offline_sam_3dbody_render.exe --onnx-dir ./onnx --gguf ./onnx/pipeline.gguf --yolo ./onnx/yolo.onnx --from 100.mp4 --bvh ./p.bvh

windows build: #2

[SHZEXIN]

blender4.2.21 + MPBF2.0.16

[AmmarkoV]

blender_bvh_plugin.py:557 is skinnedObject.pose.bones.get(...) — the NoneType is skinnedObject.pose. In Blender, every Object has a .pose attribute, but it is None unless the object is an armature. The line-552 guard only checks is not None, so a mesh sails right through.

So the object you picked in "Skinned Body to use as target" is the MPFB body mesh, not the MakeHuman armature.

Fix in Blender

1. In MPFB, make sure you actually added a skeleton (MakeHuman → Rigging → Add skeleton), and pick the Default, rig the mapping table expects MakeHuman default bone names (root, spine03, spine04, upperarm01.L, wrist.R, …). A Game-engine/CMU rig won't crash but will silently link nothing.
2. In the Skinned Body to use as target dropdown, choose the object with the armature icon (running figure), not the mesh icon (triangle). The prop_search lists every object in the scene, so the mesh is easy to hit by mistake. If unsure, click the candidate in the outliner — if Blender offers Pose Mode, it's the armature.