Finally I was able to reproduce the error in 3dsMax 2019. It was occuring exclusively in version 2019 with the update 1.1 installed.
Now it is fixed.
I’ve just released Spline Cleaner v1.73.
You can download it from the Product Updates page.
Let me know if everything works ok now.
This reply was modified 1 year, 1 month ago by rode3d.