GEOPAK Drainage - Can't graphically select ("Station DP") location when placing nodes.

This has been bugging me for a couple/few years now, and it used to work.  I am unable to graphically pick a location to place a node.  It won't snap to any graphic when using the "Station DP" tool on the Node Configuration - Location dialog box.  Any other MS tool will allow me to snap either with Accusnap or with a two-button tentative snap.  I know this used to work.  Perhaps it was a different version of MS or GEOPAK?


MS SS4 v08.11.09.832
GPK SS2 v08.11.07.615