I've run into an issue while trying to edit a box made with Nurbs. Both the Offset Tool and simple Extrude aren't working for some reason. In the images below, I recreated a nurbs object similar to the one in the Ver 5 Nurbs introductory video. After rounding the edge, I was able to extrude and offset the surfaces without any problem. The middle box was made with the polygon option and it offset fine, but the box on the right is a nurbs object. As you can see the Offset tool creates those additional cuts in the other axis' instead of insetting the surface like the ploy version, and when I try to do a simple Extrude on the plain nurbs box it crashes Lightwave. I'm pretty sure I didn't have these issues in the previous version, so if it's a new bug hopefully it can be fixed before the next official release.