Keywords: Multiple roots found

Duplicate bone name found (‘XXX’). Each bone must have a unique name

Issue:
When Import FBX into UE4, there’s error log:

Multiple roots found 
Error, Could not import MinigunPlaceholderSkel.
Duplicate bone name found ('MinigunPlaceholderSkel'). Each bone must have a unique name. 

Possible Causes:

  • The Group name is the same as the Mesh name or Bone name.
  • There’s no Group out of Mesh and Bones.

Solution:

  • Change Group name that isn’t the same as Mesh name or Bone name.
  • Create a Group and put Mesh and Bone under it.
Skinning Method

UE4 doesn’t support Dual Quaternion of Maya, Skinning Method must be set as Classic Linear.

Import SkeletalMesh using existed Skeleton

Check Skeletal Mesh and select existed Skeleton.

When pop a tip window ask if regenerate Skeleton, click Yes.


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