Hi @FrostyJas
You are right!!
I don’t find the BluePrint is causing the problem yet, but i found this:
This is the code of a BluePrint Node for call a function:
Begin Object Class=/Script/BlueprintGraph.K2Node_CallFunction Name="K2Node_CallFunction_0" ExportPath="/Script/BlueprintGraph.K2Node_CallFunction'/.../MyBluePrint.MyBluePrintr:EventGraph.K2Node_CallFunction_0'"
....
End Object
And “K2Node_Knot” seem to be a base class for some nodes
https://docs.unrealengine.com/4.27/en-US/API/Editor/BlueprintGraph/UK2Node_Knot/
And this guy says it can be used to reroute an spawn nodes.
So now i just need find where is the problematic node.
I hope this info help to others!!
Thank you so much!! 