When I'm making a splineShape from my script (a plugin written in maxscript if that is of importance) I get problems with knot and segment selection.
When I select the splineShape manually and for example goes to select individual knots, some of them are already selected. When I click on a knot it gets selected, but the other once are still selected, as if I was holding down Ctrl.
I can deselect knots by holding down Alt, but if I then select a knot and tries to move it (by dragging) the selection jumps back to the once that was selected at the beginning, before the one I selected gets moved.
If I move my selected knot by typing new coordinates it works.
Any idea what's wrong?