Hi skipper, well looking in your .3dm file in the start of this thread, there aren't any "point objects" in the file which is what the SavePointFile command is looking for. It won't recognize edit points that you can turn on for curve editing which is probably what you are doing?

You can convert edit points into point objects by selecting all edit points (but not the curve itself) and using Ctrl+C copy and then Ctrl+V paste. A quick way to select all edit points is to select one and then do Ctrl+A for select all.

Once you have converted the edit points into individual point objects then SavePointFile should do what you need.

- Michael