Curve start point needs to be visable to help close open curves.

 From:  Michael Gibson
3757.2 In reply to 3757.1 
Hi 3dcnc, check out this previous post:

That has a plug-in that make a new command in MoI called MarkOpenCurveStart , and when you set that up on a keyboard shortcut it will create a point object to mark the starting endpoint of an open curve.

- Michael