Rapture: can't reshape cut1 envelope segments
On some of my Rapture programs, I can't reshape cut1 envelope segments. When I attempt to drag the segment with the mouse to change its shape, the segment stays stationary, and a red shaded block the length of the segment is created instead, which seems to have no audible effect on the envelope.
Other envelopes (e.g. cut2) in the same program do not exhibit this behavior when I attempt to reshape the segment, and I am able to change their shape as described in the manual. Also, in other programs that I have created, the cut1 envelope segments can be reshaped just fine.
What am I doing wrong?
thanks
Keith