Hi JTB - I do want to add this, but I also wanted to let you know that there is currently another way to do this other than booleans.

What you can do is extrude your curve into a surface (use "both sides" option), then do a "mutual trim".

This is where you select the 2 objects, then do a trim and at the point where it asks you to select cutting objects, just push "Done" there. This signals that those objects are both being cut and acting as a cutter as well.

This will leave you with the pieces, and you can then join those pieces back into solids.

Let me know if you need more info on this.

- Michael