I'm doing the Level 2 tutorials. I'm on exercise 18 - Soft Corners. After I perform the Sweep 1 command to make the first surface. I repeat the Sweep 1 command to make the second surface. But, when I pick the top edge of the surface I just created, it only picks a short section. I've tried using Shift to pick all the edges first and then pick the cross-sections but, that does no good. I would provide a screen shot but, I see no way of doing so. Thanks for any advice or suggestions. I have Windows 10 Pro 64 bit installed. Is Rhino fully compatible with this O/S?