IndexOutOfRangeException

[SimonP]

Hello! I just bought the asset. When I try to add the skeleton in the blueprint it gives me this error.
If I generate it without skeleton it works fine.

Any suggestions?

P/d: Unity 2021.3.9f clean project

IndexOutOfRangeException: Index was outside the bounds of the array.
Obi.GraphColoring.AddConstraint (System.Int32[] particles) (at Assets/Obi/Scripts/Common/Blueprints/GraphColoring.cs:44)
Obi.ObiSoftbodySurfaceBlueprint+<CreateClustersFromSkeleton>d__51.MoveNext () (at Assets/Obi/Scripts/Softbody/Actors/ObiSoftbodySurfaceBlueprint.cs:618)
Obi.ObiSoftbodySurfaceBlueprint+<Initialize>d__37.MoveNext () (at Assets/Obi/Scripts/Softbody/Actors/ObiSoftbodySurfaceBlueprint.cs:215)
Obi.ObiActorBlueprint+<Generate>d__59.MoveNext () (at Assets/Obi/Scripts/Common/Blueprints/ObiActorBlueprint.cs:282)
Obi.CoroutineJob+<Start>d__15.MoveNext () (at Assets/Obi/Scripts/Common/Utils/Coroutines/CoroutineJob.cs:99)
UnityEngine.Debug:LogException(Exception)
Obi.<Start>d__15:MoveNext() (at Assets/Obi/Scripts/Common/Utils/Coroutines/CoroutineJob.cs:108)
Obi.EditorCoroutine:ShowCoroutineProgressBar(String, IEnumerator&) (at Assets/Obi/Scripts/Common/Utils/Coroutines/EditorCoroutine.cs:21)
Obi.ObiActorBlueprintEditor:Generate() (at Assets/Obi/Editor/Common/Blueprints/ObiActorBlueprintEditor.cs:131)
Obi.ObiActorBlueprintEditor:OnInspectorGUI() (at Assets/Obi/Editor/Common/Blueprints/ObiActorBlueprintEditor.cs:163)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr, Boolean&)