Hey Rich,I'm not too sure, but it could be something to do with your Crease Angle Min/Max values. Set Min to 180 and Max to 0. Also - turn OFF Profile lines by setting line width to 0.
Hi Rich. This could be a problem driven by inverted or locked normals on your model. Clean up the model by going to Normals menu and unlocking, conforming, and set to face.
Hi guys, tried both but still not working :(