I think you and Dave4723 are suggesting the same thing? I responded to him below with what I think you were suggesting as well. Set Static Mesh simply tells a StaticMeshActor which mesh to use, it doesn’t create anything. I could be wrong but I’m pretty sure I need to spawn the actor first and then tell it which mesh to use.
One other thing is I screwed up and said that the PIE gives me an error, it’s actually just a warning. Not sure if that helps though. I will edit the original post.