ICEM hexa mesh tutarial 2d car problem
 

i have to simulate an external flow over a 2d NACA airfoil.so,when going through the ICEM Hexa mesh tutarial 2d car.and while spliting the initialize block (in creating the edge ,crossing the bottom of the car at PNTS.12),an error message appears.i try this operation more and more,but i have the same problem. please, i will be very thankfull for any idea or suggestion. cfd user.