Problem with lofting curves

Hi,

I have difficulties in lofting curves in Grasshopper v6. When I use curves drawn in Rhino and assigned to a Grasshopper ‘curve’ icon, the lofting works fine. However, when I generate an interpolated sine curve as well as two lines in Grasshopper and then apply the lofting, the lofting doesn’t work out. I applied the same procedure as before with the hand drawn curves, ensuring that the sequence in which I thread them into the loft function is correct. I even reparameterised each of these curves and tried the flip function. No joy. The funny thing is when I bake these three curves and then loft inside Rhino, the result comes out exactly as I would want it. Might anybody have an idea how I can resolve this?