Embedded Files
UI Hidden Errors
UI Hidden Errors
In these cases, the Bone Split panel does not appear at all in the N-panel.
- Select a mesh or armature object
Cause:
The selected mesh does not have an Armature Modifier, or it's unassigned.
How to Fix:
Add an Armature Modifier to the mesh and make sure the Object field is not empty.
- No valid armature modifier exists
Cause:
The selected mesh has no Armature Modifier assigned.
How to Fix:
Add an Armature Modifier and set the armature object. \
- No vertex groups found
Cause:
The selected mesh has no vertex groups.
How to Fix:
Add vertex groups to the mesh or assign weights via Weight Paint.
Blocking Errors
Blocking Errors
These prevent the operation from running. The "Split Bone & Weights" button will be disabled.
- Either vertex group or bone is missing
Cause:
The selected bone or corresponding vertex group does not exist, or the names don’t match.
How to Fix:
Make sure the vertex group name matches the bone name in the armature.
- Multiple armatures detected
Cause:
The mesh has more than one Armature Modifier.
How to Fix:
Open the Armature Lists panel and remove any extra modifiers.
Note:
The operation will be disabled until you fix this.
- Armature must be in Pose/Edit mode
Cause:
The active armature is in Object Mode.
How to Fix:
Switch the armature to Pose Mode or Edit Mode before running the operation.
Warnings
Warnings
These messages appear as warnings, but the operation can still be performed.
- Execution may be unstable in Blender versions below 4.0
Cause:
Older versions of Blender may not behave consistently due to API differences.
How to Fix:
Use Blender 4.0 or later for best results.
Others
Others
- Split button is greyed out
Cause:
Required conditions such as active selection, mode, or data are missing.
How to Fix:
Make sure both the mesh and armature are selected.
Ensure you are in a supported mode (e.g. Weight Paint + Pose Mode).
- Split is not symmetric
Cause:
Bone names lack detectable symmetry markers.
How to Fix:
Add markers like _L, L_, -R, Right, etc.
- Split button is greyed out
Cause:
Required conditions such as active selection, mode, or data are missing.
How to Fix:
Make sure both the mesh and armature are selected.
Ensure you are in a supported mode (e.g. Weight Paint + Pose Mode).
- Symmetry is grayed out
Cause:
One or more related mesh objects (not just the selected one) have a Mirror Modifier.
In this case, symmetry is automatically enabled and the checkbox is locked.
How to Fix:
Apply or remove the Mirror Modifier from the relevant mesh using the Mirror Modifier Panel
Or uncheck "Apply to Multiple Objects", so only the active object is affected — this will unlock the Symmetry toggle.
- Apply to Multiple Objects is grayed out
Cause:
This option is automatically enabled and locked when the armature is in Pose Mode or Edit Mode.
How to Fix:
If needed, switch the armature back to Object Mode to make the checkbox editable again.
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