I’m unable to replicate your results in UE4.12. I’m uncertain if this is because I am missing something or if it is because UE4 now handles spline meshes a bit differently. This thread is a year old and has been marked as solved so I have opened a new thread here. I’m curious if you are able to replicate your own results in 4.12. If this is too much to ask I wonder if you can tell me what two additional nodes the output from your “Add spline mesh component” are connected too.