When I try to insert isoparms (I make one and click the insert isoparms button), my isoparm dissapears.
InsertIsoparms;
insertKnotSurface -ch 1 -nk 1 -add 1 -ib 0 -rpo 1 nurbsCylinder1.u[1.74132003101293e-006];
// Warning: insertKnotSurface10 (Insert Knot Surface Node): failed to compute the result. //
// Warning: insertKnotSurface10 (Insert Knot Surface Node): failed to compute the result. //
// Result: nurbsCylinder1 insertKnotSurface10 //

Greetings Brecht
Hope you guys can help me.