If I rebuild the looped curve, the "double" intersection problems go away.

If I separate a fresh curve, or a rebuilt curve, and then (re) Join it,
then the Intersect script causes "double" intersect points.

It seems like the intersect script is detecting pre-join curve segments???

Sometimes the crossover yields 3 points from intersect.

- Brian

ps I think my mouse has been acting a little strange lately, so I gave it a rap on the mousepad :-)
Seems to have helped with mouse selection.