It is set for NURBS. Like I said, it works fine for any other Project scene file. This one Project scene file is the problem. The Extrude settings do not change when testing it both ways. The scene file is corrupt, or I accidently hit a marker button that changed something about the scene that I can not see. I am still in training, so this could happen. I accidently open the marker sometimes when working. As I said, when I extrude the tube goes from the first EP point to the last and makes a straight tube. It does not follow the EP curve. The component CVs do follow the EP curve, but not the tube surface. Moving CVs does not change tube surface. It acts like the CVs have no affect on Extrude tube. Thats why I think the file is corrupt.
Kori
Kori