Vertex groups FBX export error #50206

New Issue

Anna · 2016-12-09T08:34:04+01:00

Anna commented

2016-12-09 08:34:04 +01:00

System Information
Windows 8.0

Blender Version
2.77
Short description of error
Cannot export mesh to fbx, if it contains HIPS bone in its skin (e.g. Legs mesh), without getting all bones listed in vertex groups (e.g. fingers etc.)

Exact steps for others to reproduce the error
Hello,
There is a problem with Vertex groups FBX export. I have a model consisting of several parts. And an Armature to skin it to. I skinned every part of the model to corresponding bone of an Armature. Skin has to be clear, without empty vertex groups in it. I need to export it to fbx, so that it preserved these features. But when I export it, I get all empty groups in skin.
In blend file I have clear legs skin. Only leg and hips bones. No other bones, like eyes, fingers etc. See pic vg1.jpg.
In fbx file I have ALL bones of the Armature in the list. And I cannot delete them from this list! (because they are not there in blender...) See Pic vg2.jpg.

However, in case with arms I have clear vertex groups with export to fbx. See vg3.jpg and vg4.jpg.

I figured out that I have ALL vertex groups exported in 2 cases:

When there is HIPS bone present in skin. I tried to skin using "Assigned Automatic from bones" with HIPS and I tried to skin without HIPS automatically, adding HIPS later as "Add a new vertex group". Result is the same.
This very error appears when I skin using "Assigned Automatic from bones" and some bone is a direct child of HIPS. For example, UpLeg. When it is present in skin, I get all bones in export list. But I can add UpLeg not automatically, but later, manually using "Add a new vertex group". Then I get clear vertex groups exported.

How can I export my mesh to fbx, containing HIPS bone in its skin, without getting all bones listed in vertex groups in result?

Thanks for any reply.

vertex_groups_export.blend

**System Information** Windows 8.0 **Blender Version** 2.77 **Short description of error** Cannot export mesh to fbx, if it contains HIPS bone in its skin (e.g. Legs mesh), without getting all bones listed in vertex groups (e.g. fingers etc.) **Exact steps for others to reproduce the error** Hello, There is a problem with Vertex groups FBX export. I have a model consisting of several parts. And an Armature to skin it to. I skinned every part of the model to corresponding bone of an Armature. Skin has to be clear, without empty vertex groups in it. I need to export it to fbx, so that it preserved these features. But when I export it, I get all empty groups in skin. In blend file I have clear legs skin. Only leg and hips bones. No other bones, like eyes, fingers etc. See pic vg1.jpg. In fbx file I have ALL bones of the Armature in the list. And I cannot delete them from this list! (because they are not there in blender...) See Pic vg2.jpg. However, in case with arms I have clear vertex groups with export to fbx. See vg3.jpg and vg4.jpg. I figured out that I have ALL vertex groups exported in 2 cases: 1. When there is HIPS bone present in skin. I tried to skin using "Assigned Automatic from bones" with HIPS and I tried to skin without HIPS automatically, adding HIPS later as "Add a new vertex group". Result is the same. 2. This very error appears when I skin using "Assigned Automatic from bones" and some bone is a direct child of HIPS. For example, UpLeg. When it is present in skin, I get all bones in export list. But I can add UpLeg not automatically, but later, manually using "Add a new vertex group". Then I get clear vertex groups exported. How can I export my mesh to fbx, containing HIPS bone in its skin, without getting all bones listed in vertex groups in result? Thanks for any reply. ![vg1.jpg](https://archive.blender.org/developer/F415987/vg1.jpg) ![vg2.jpg](https://archive.blender.org/developer/F415989/vg2.jpg) ![vg3.jpg](https://archive.blender.org/developer/F415990/vg3.jpg) ![vg4.jpg](https://archive.blender.org/developer/F415988/vg4.jpg) [vertex_groups_export.blend](https://archive.blender.org/developer/F415986/vertex_groups_export.blend)

Anna commented

2016-12-09 08:34:04 +01:00

Changed status to: 'Open'

Anna commented

2016-12-09 08:34:04 +01:00

Added subscriber: @AnnaOKey

Bastien Montagne commented

2016-12-09 09:58:29 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2016-12-09 09:58:29 +01:00

See no bug here, checked your model in Blender, legs vgroups are assigned OK, then exported to FBX, and re-imported FBX into Blender, and get same vgroups as in original .blend file.

So if issue there is, it looks like it is in the other app's FBX importing, whatever this app may be…

See no bug here, checked your model in Blender, legs vgroups are assigned OK, then exported to FBX, and re-imported FBX into Blender, and get same vgroups as in original .blend file. So if issue there is, it looks like it is in the other app's FBX importing, whatever this app may be…

Bastien Montagne commented

2016-12-16 20:22:01 +01:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2016-12-16 20:22:01 +01:00

Bastien Montagne self-assigned this 2016-12-16 20:22:01 +01:00

Bastien Montagne commented

2016-12-16 20:22:01 +01:00

More than a week without reply. Due to the policy of the tracker archiving for until required info/data are provided.

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Vertex groups FBX export error #50206